Don't tell this to Chrysler. They started experimenting with turbine cars
in the 1950s and were getting descent gas mileage. (At least better than my
1977 Trans Am.) Anyway, we won't be seeing them any time soon but, it would
be neat.

http://www.aardvark.co.nz/pjet/chrysler.shtml


Never say never, but... I don't expect to see it in my lifetime.
Small
turbines have bad fuel specifics. In stationary use, things improve
greatly if
you can find a use for the waste heat. In the case of airplanes, turbines
have
size and weight advantages that help to offset their thirstiness. Cars
are a
whole 'nuther matter.