Why is everybody makng guns? I haven't seen a vehicle picture in a loong time.
Well to begin with, guns are simple- of course to a simple limit. But in most cases guns shouldn't take too long and they're what beginners do.
Now, vehicles are somewhat relative, but extremely different. First of all it's a whole new thing; a vehicle. Second of all it uses differently named joints of course, and lastly they have collision boxes. Although I just named everything in a fully completed vehicle, people mostly finish their cars when they start them. Cars are good, but they can be a major pain in the ass.