“For only 2 vehicles being in the game, pretty fun. I was able to max out both cars and get them to weigh least as I could while having them run pretty quickly.” Steam
Widely considered the "ultimate" car-building simulator with extreme detail and survival elements. car-constructor-pc-game-free-download
If you are looking for a more robust "constructor" or car-building experience, consider these alternatives: “For only 2 vehicles being in the game, pretty fun
A more modern simulator that mixes mechanic gameplay with street racing in an open world. Save 51% on Car Constructor on Steam car-constructor-pc-game-free-download
It includes a "realistic" mountain track and various road surfaces intended to test your car's physics and tuning.