@Gaurav makes an excellent point in that fast accelaration can be a safety feature, but you don't need a V8 to get good acceleration. There are many smaller cars with smaller engines that eat Mustangs alive, and they use less fuel doing so than the Mustang does by just trying to keep up.
I submit that smaller cars with smaller engines can be just as much fun to drive as any Mustang or Corvette, but for all that, we have to admit that the planet is in real trouble. One Mustang may not contribute to the problem in any meaningful way, but the problem is that there are millions of Mustangs and Corvettes that do play a major part in global warming, as in fact, all internal combustion engines do.
Developments in fuel efficiency and emission control can only go so far. In fact, some emission control devices like DPF filters on diesels wipe out most of the advantages of other emission control measures. The real solution to the problem of emissions requires the development of entirely new automotive technologies. One solution might be steam power, but a suitable heat source is a little problematic at this time.
Somebody once sugested that small nuclear reactors might work, but the idea of hundreds of millions of nuclear reactors on the roads seems more of a nightmare than all of the billions of internal combustion engines in operation today can ever be.
One day in the not-too-distant future the oil WILL run out, and with the poor performance and range of most electric cars, it seems that electricity is not a viable alternative. Any ideas on alternative power plants for cars of the future?