How do I make a working jailbreak type car?

Hello! I am working on a roleplay game and I really need cars. I want to launch my game on Christmas and the only thing left to do is to get cars in-game. No offense, but if you work for Inspare, I don't use those models. The cars need to be like jailbreak cars, so not low-poly, but not high-poly. Thank you very much!