Background: Nelson Piquet Souto Maior (Portuguese pronunciation: ['newso pi'ke], born August 17, 1952), known as Nelson Piquet, is a Brazilian former racing driver and businessman. Since his retirement, Piquet has been ranked among the greatest Formula One drivers in various motorsport polls. Piquet had a brief career in tennis before losing interest in the sport and subsequently took up karting and hid his identity to prevent his father discovering his hobby. He became the Brazilian national karting champion in 1971-72 and won the Formula Vee championship in 1976.
Context: Nelson Piquet and the number 1 went to a stagnating Lotus team in 1988, and his career took a nose dive despite the Camel sponsored Lotus 100T having the same specification Honda V6 turbo that powered the McLarens of Ayrton Senna and Alain Prost. Nelson, who had 20 wins and 3 World Championships following the 1987 season, began to lose his reputation when he had no wins in 1988, losing his number one status to fellow Brazilian Senna, who won 8 races and the championship for McLaren (Prost won 7 races, while Piquet could only manage three 3rd-place finishes for the season).  In early 1988 he resorted to using the media to attack his rivals and gained a reputation as an outspoken "loose cannon", such as attacking Mansell and his wife, calling Mansell "an uneducated blockhead" (and insulting his wife's looks), and calling fellow Senna "the Sao Paulo taxi driver" and stating that he "doesn't like women". Piquet retracted his comments when both threatened legal action. He also earned the ire of the Tifosi at the San Marino Grand Prix when he said in an interview with Playboy that Scuderia Ferrari might do better as a team if the boss (Enzo Ferrari) was a younger man instead of the 90-year-old one who rarely attended races due to his age and failing health. Piquet claims he was badly misquoted in the interview, which also had him questioning Alain Prost's standing as the best driver in the world. On the official FIA video review of the 1988 season, Piquet left no doubts that the article got it wrong in his comments about Ferrari (saying that at 90, Enzo Ferrari had to be a strong man to run a Formula One team), and that he considered Prost to be the world's best driver.  Piquet had a dismal 1989 season, driving a Judd V8-powered Lotus which had 125 less hp than the Honda V10s used by McLaren. He (and teammate Satoru Nakajima) once again had no wins and they both even failed to qualify for the 1989 Belgian Grand Prix, Piquet's first non-qualification since the 1982 Detroit Grand Prix. On what was his last attempt to qualify at Spa, Piquet lost his chance when he was slowed by rookie Frenchman Olivier Grouillard, who had gained a reputation throughout the season as a blocker.
Question: what was the highlight of his stint with lotus?

Answer:
In early 1988 he resorted to using the media to attack his rivals and gained a reputation as an outspoken "loose cannon