Inspired by the arcade classic Bump 'n' Jump (1982). Roadhop is an original game and is not affiliated with its makers.
Top-down cars, trucks and the dozer: Car Game Asset by GameSupplyGuy — gamesupply.itch.io.
Wasteland raiders: Futuristic Wasteland Top-down Cars asset pack.
Game design, code, road, scenery, critters, effects and all sound (synthesised in the game): made for Roadhop.