Well, I went out for my birthday to downtown Dallas. That's about 10 miles. Hour later drove to Sears. Stayed in there about 15 minutes. When I tried to start my VX, IT WOULD NOT START. It would crank up, but as soon as I took my foot off the gas it would die. This happened about 15 times. I thought that maybe it was just too hot outside and the engine might need to be cooled. I popped the hood, started the cat like nothing was ever wrong. I went straight to the dealer to have them check it out. They couldn't find anything wrong. Has this ever happened to anyone else? Any advice on what you think it may be would really be appreciated.