I had thought about mentioning
CarBEN EV5 Full Sized Prototype Construction - 5 Seat Electric Car, but started with 'what materials?'.
Randy Grubb or Christopher Runge do hand-beaten aluminum over an MDF eggcrate.
https://duckduckgo.com/?q=sketchup+export+options
It all comes down to the tool-chain. Modeler-->slicer-->CNC.
ThomCat316 —— Do we get to see the design? That determines a lot of parameters.