I couldn't give up my car but I see a future where I'll be limited to driving it on the track.
I'm putting EFI on my 930 purely for environmental reasons, the performance gain is just a bonus.
Even a $2.20 or more per gallon, I don't think Americans are going to conserve fuel. I think the government should start increasing gas taxes maybe 10% a year until it's high enough for people to start wanting more fuel efficent vehicles.
I also wish there was a 1/2 ton full size truck with a small turbo diesel, such as a 4 liter V-6. I bet such a vehicle would get over 20mpg as apposed to my truck which gets 12mpg.