But I recently found out, that now there exist a car, which makes use of microturbines and lithium batteries. It's very fuel efficient as well as enviromental-friendly with the lowest NOx emissions, no need for extra katalyst, a max speed of 150 mph (240 km/h)(even electronically limited!! Wonder what real max speed is!

It's called the CMT-380 Capstone Supercar http://www.capstoneturbine.com/, which is also a black sports car.
http://www.youtube.com/watch?v=NMe6iikMvsc
http://www.youtube.com/watch?v=EmoD87THXzQ Sounds interesting the turbine at 0:32, this is how KITT would sound, if he would really be build…

Glen is really a visionary, he foresaw the future, a real and feasable car, that was/is the car of tomorrow!

The turbo-boost with the extreme powerful turbine, the Line-X covering which is the real MBS - it has exceed the scifi aspect and I the more I know about new technologies - I really can image a Knight Industries building this masterpiece.