[Varyon]

A bit of online searching only finds an old article from 9 years ago about a new company, Pixelbionic, set to debut with a game called Autoduel (post-apocalyptic car combat), with references to Car Wars only in the comments. Seeing as the link to the company's website in the article now goes nowhere, and that searches for the company turn up little beyond sites that list it as a company with Autoduel "in development," I'd say that particular bit tanked.

I also found some mentions of SJGames looking for the source code for the original game (with speculation the search may be for a rerelease on Steam or similar), but nothing beyond that. So... don't hold your breath.