Car Wars was a tactical pen & paper simulation game in which vehicles were equipped with machine guns, oil slicks, caltrops, missles and other equipment suited for vehicle combat warfare.
If this sounds like Mad Max, then yeah, that's exactly what Car Wars is because Mad Max was a key inspiration for the the tactical pen & paper game.
In 1985, it inspired one of the all-time great early RPGs called Autoduel. You may even have caught TAGN mentioning this gem back in March as one of the "Five Games [TAGN Wants] to See Revamped".
TAGN explains why Autoduel can't make a comeback, but clearly the IP is solid. WB Games has a Mad Max video game to be released on multiple platforms that you can already pre-order (18 months from it's release date as of this writing).
But a multi-platform console game simply misses the mark. Oh, I'll buy it. Interstate '76, also inspired by Car Wars, is one of my favorite "LAN-party" era games. Cars with guns has always been fun. It was fun when I played I76 and it was fun when I played the early Twisted Metal games.
No, it misses the mark because this IP is absolutely PERFECT for a sandbox PvP game.
First, it's a cruel and heartless post-apocalyptic world. Every man needs to protect his own interests and form bonds with others. To get what you need, you have to scavenge and others want what you have and are willing to kill you to take it. To protect yourself, you need to find friends and build yourself an arsenal and maybe, just maybe, you can build something together.
EDIT: If you are curious why I'm not suggesting that the I76 IP is used, well, that IP is owned by Activision Blizzard and not exactly my first choice for a sandbox PvP game. :)