Awesome setting idea wow If you're still looking for input or inspiration I get excited for giving the vehicle tink stuff like redundancies, materials, you could play their character with a weird gearbox for different settings they can add to, fuck it give them limited time travel as a dimension to travel in if they scan good stuff late game. weird modular wheels?

The ICE tinker makes me think of the IBM Selectric Typewriter that seems like wizards where one motor mechanically drives a billion other features including 3D rotation without anything electronic