Twilight 2080 with a little more gonzo.

[Tombot]

A bit like the world of "Car Wars/GURPs Autoduel" maybe ?
They have the "Traveller"-Kind of HighTech in the few remaining citys (along with Megacorps, Zaibatsus, Cyber-Ninjas - Cyberpunk minus most of the far-out Spacetravel), and the "MadMax"-Style LoTech outside.

All of it coming from the Shortstory "Why Johnny cant speed" from Alan Dean Foster. Check out "Autoduel", a sourcebook from GURPS, guess you would like it.
Not too SciFi, but enough of it, if you still want some down-to-earth gritty combat.

[pmulcahy11b]

2080? Assume powerful computers and AI are in just about everything.

And assume your PCs are, to some degree, cyborgs.

[Draq]

Reminds me of Iron Crowns Cyberspace. Still my favorite 1980s retro-futuristic dystopian cyberpunks rpgs.