Howdy! 
There are some tutorials on the Developer Hub or on the forums, I guess before you make a bike or plane, maybe check out a car first then you can learn the components for the attachments and functions of it.
Nope, you can start out fresh by learning on how a car functions and moves in some tutorials or resources, everyone starts out new and learns how to do that in many days or weeks if you practice!
Link to how to to rig a car: How to Rig a Car
Here’s the link to a basic car tutorial: Documentation - Roblox Creator Hub