Question:
John F. Maulbetsch (June 20, 1890 - September 14, 1950) was an All-American football halfback at Adrian College in 1911 and for the University of Michigan Wolverines from 1914 to 1916. He is also a member of the College Football Hall of Fame. After playing with an independent football team in Ann Arbor and at Adrian College, Maulbetsch became one of the most famous American football players in 1914 while playing for the University of Michigan. Maulbetsch became known as the "Human Bullet" because of his unusual low, line-plunging style of play, and was also known as the "Featherweight Fullback" because of his light weight and small size.
Much of the attention on Maulbetsch focused on his diminutive size and unique running style. At 5 ft 7 in (1.70 m), and 155 lb (70 kg), Maulbetsch was a small back, even by the standards of his day. And his running style saw him bend his torso and propel himself like a projectile into the opposing line. Indeed, he won several nicknames based on his size, running style, and fighting spirit, including the "Human Bullet," "Mauly", the "Human Shrapnel", the "Featherweight Fullback", the "Michigan Cannon Ball," and the "German bullet." Comparisons of Maulbetsch to military armaments were common. In addition to the "bullet", "shrapnel", and "cannonball" nicknames, the Syracuse Herald observed: "Standing up in front of a Krupp gun has its dangers, but it is not to be compared with the dangers of standing in front of Maulbetsch when he is going full speed ahead."  Maulbetsch's style was described as "line-plunging." A New York newspaper noted: "When the ball is snapped to him he almost doubles himself up, and, with his head aimed at the knees of the opposing line, he dives head first. Those who have seen Maulbetsch in action marvel at the great momentum he can get up in two or three steps." Noted football writer Walter Eckersall said: "Mauly is a little fellow, being built close to the ground. They say that when he plunges at the line his head is almost on a level with his shoe tops - that he hits so low that it's well nigh impossible to stop him." An Iowa newspaper wondered how it was possible "for a man to smash into a line of human bodies with the force that Maulbetsch does and come out of the game without a broken neck."  Maulbetsch was said to run "so low that he could dash under an ordinary table without losing his feet." At a coaching conference in the 1920s, a coach doubted the table-ducking story and challenged Maulbetsch. The doubter later recalled: "I began ribbing him about this table-ducking stuff and finally offered to bet him he couldn't do it. Well, we got a table up in a room, Johnny tucked a water pitcher under his arm and backed against the wall. Darned if he didn't do it, the only thing, that water pitcher broke in a million pieces." Asked about the incident, Maulbetsch said it was true, except one part. Maulbetsch insisted there wasn't a nick on the pitcher.
Answer this question using a quote from the text above:

Why was he called the human bullet?

Answer:
he won several nicknames based on his size, running style, and fighting spirit, including the "Human Bullet,

Answer the question at the end by quoting:

Eric Demetri Dickerson (born September 2, 1960) is a former college and professional American football player who was a running back in the National Football League (NFL) for eleven seasons during the 1980s and 1990s. Dickerson played college football for the SMU Mustangs of Southern Methodist University and was recognized as an All-American. He was selected in the first round of the 1983 NFL Draft and played professionally for the Los Angeles Rams, Indianapolis Colts, Los Angeles Raiders, and Atlanta Falcons of the NFL. During his NFL career, he rushed for over 13,000 yards.
The 1985 season marked the beginning of on-going contract disputes between Dickerson and the Rams. In 1987, after playing just three games for the Rams during the strike-shortened 1987 season, Dickerson was traded to the Indianapolis Colts in one of the NFL's biggest trades ever at that time. In a three-team deal, the Colts traded linebacker Cornelius Bennett, whom they drafted but were unable to sign to a contract, to the Buffalo Bills for their first-round pick in 1988, first- and second-round picks in 1989, and running back Greg Bell. The Colts in turn traded Bell and the three draft choices from Buffalo plus their own first- and second-round picks in 1988, their second round pick in 1989, and running back Owen Gill to the Rams for Dickerson. With the picks the Rams took running back Gaston Green, wide receiver Aaron Cox, linebacker Fred Strickland, running back Cleveland Gary, linebacker Frank Stams, and defensive back Darryl Henley. The trade reunited Dickerson with Ron Meyer, who had left SMU after Dickerson's junior season to take the head coaching position in New England and who was hired by the Colts in 1986 following Rod Dowhower's firing.  Although he played in just nine games with the Colts that year, he still managed to gain 1,011 yards to finish the season with 1,288. Also, he spearheaded a late season Colts run that helped the team to their first winning season (and first playoff berth) in 10 years.  In 1988, Dickerson, with 1,659 yards rushing, became the first Colt to lead the league in rushing since Alan Ameche in 1955. This would mark the apogee of Dickerson's career with the Colts (although he would gain 1,311 yards rushing in 1989). Also, 1989 was the year that he passed the 10,000-yard mark, becoming the fastest player ever to do so (91 games), accomplishing the feat faster than greats like Jim Brown (98 games), Barry Sanders (103 games), Emmitt Smith (106 games), and LaDainian Tomlinson (106 games). By 1989, he had set a new NFL record with seven straight seasons of more than 1,000 yards rushing, and led the league for four of those seasons. With the retirement of Tony Dorsett at then end of 1988, he became the leader among active players in career rushing yards, a position he occupied until his own retirement in 1993.  However, injuries, further contract disputes, and suspensions clouded his final two seasons with the Colts. Dickerson, at 29, was the highest paid running back in the NFL, receiving an annual reported salary of $1.4 million. Following prolonged contract disputes, the fed-up Colts placed him on the inactive list before the start of the 1990 season where he stayed for 7 weeks and lost more than $600,000 in salary. In his sixth game back from suspension, he rushed for 143 yards against the Bengals on 22 carries--this effort lifted him past Jim Brown to third place on the NFL career rushing list behind Walter Payton and Tony Dorsett. He was again suspended in November 1991, and amidst injuries and age, managed to run for only 536 yards that season. The Colts finished the year bottoming out with a 1-15 record.

did he set even more records?
he became the leader among active players in career rushing yards, a position he occupied until his own retirement in 1993.