How about this, then?
"Ignition" - 1997
Edit: I forgot you said there's no racing involved, this is the only other top down, greenish, dark game that I could find, but it doesn't have any angle, pure top down:
"Vangers" - 1998
Twisted Metal and Vigilante 8 are the first things that come to my mind when I hear "Car Combat". But unfortunately Vigilante 8 didn't have a top down perspective and it was never released for the PC.