My dream car changes every day. I would have a hard time picking just one.
My current boss has a Ferrari 360. The thing is absolutely fantastic. So, I might go with a F430.
However, I saw a Lamborghini Murcielago on the 4th of July. The guy pulled into my condo complex and stopped to pick up his date. He left the door open and the engine running with me standing right there. Makes you think about how easy it was all those times playing GTA.
The Lamborghini looked incredible at night under the lights with smoke from fireworks all around it. I wish I had a camera. It didn't sound that great at idle, but once he revved it up, it was just amazing.
Then I think about the cars I have in Gran Turismo 5 Prologue. My favorites are the F430, Ford GT, and the F40. The F40 makes me wish it had one or two more gears in the transmission. It keeps up with the 700 point cars even though it maxes at 679. And the Ford GT seems like a bargain among supercars. I win more races in the GT than I do in the F430. It's just easier to use all of that brute force power than it is to use the slightly better handling of the F430. I love that game. Can't wait for the full Gran Turismo 5 to become available.