About 3 months ago my wife had a problem re-starting the car... After driving around on a hot day, with the A/C, she had it parked for a few minutes and then had trouble re-starting... It would fire, stumble, and stall... Did this about 6 times... Waited a few more minutes and then it started right up... It's been perfect for 3 months now (including the horrible heat wave we had last week) until today... Drove home from work, with A/C running... Stopped at a store for a few minutes... Started again just fine... Stopped for gas... Had trouble re-starting... It would fire, stumble, stall... After about 4 tries it fired up and ran perfectly... In the old days I would call this vapor lock... What do you think???... It's a 2001 LS with the 3.8L motor, 53,000 miles...