Was this some sort of concept Z?
I love the in-car telephone!
Look up 'Seibu Keisatsu' (literally: 'Western Police'). It was a massively popular, somewhat corny but self-parodying all-action cops-vs-baddies Japanese TV show that ran from the late Seventies through to the mid-Eighties. Lots of explosions, car and bike stunts and sunglasses. The soundtrack was also popular.
The production company had a commercial tie-up with Nissan and built some special vehicles for the shows. They still exist, and usually reside in a museum dedicated to the production company's founder Yujiro Ishihara, a massive star in his own right.
This YouTube link might give you some idea of what it was like:
Seibu Keisatsu clips