1967: Mario Andretti became the fifth driver in Indy history to win back to back pole positions. His third lap (169.779 mph) was new one-lap track record. Striving to break the 170 mph barrier on his fourth and final lap, his car slipped, and he short. He still managed a record four-lap average of 168.982 mph, and won the pole by a comfortable margin. Meanwhile, Parnelli Jones in the STP Turbine qualified sixth. On race day (May 30), Mario took the lead into turn one, but by the exit of turn two, Parnelli Jones had blown by him in the Turbine powered car. After only 12 laps, Mario was forced to pit with a bad clutch. Moments later, rain began to fall, and the race was halted. The red flag allowed Mario's team to make repairs. The race restarted the following day (May 31) with Mario lined up 32nd, six laps down. Mario quickly began charging through the pack, passing many cars and posting some of the fastest laps of the race up to that point, On his 58th lap, he began to feel a vibration, and decided to slow down. A few seconds later, his right front wheel came off. He dropped out of the race and placed 30th. Despite 8 wins during the season, the poor finish at Indy likely cost Andretti the 1967 USAC Championship.