i added the ball bearings that let the wheels turn and then i started working on the gearbox while fixing some design mistakes along the way, looking for how to get a 3d model of a bevel gear was a problem but that got solved quickly although putting them in place on the assembly was tough but when i went to add the axles that connect to the back wheels i noticed a fatal mistake i made is that i forgot that the wheels have to be on the same height yet i put the front wheels too high up or the back wheels too low down either way its going to be a hassle fixing it i wish i noticed it earlier