Since any map projection is a representation of one of those surfaces on a plane, all map projections distort. Every distinct map projection distorts in a distinct way. The study of map projections is the characterization of these distortions.
If you have the car as collateral, the loan company will take the car. The co-signer is not automatically put on the title, that would be between you and the co-signer. My father co-signed a loan when I was younger, and my name was on the title, not his.
It basically works like any collateral loan. In this case, you use the title of your vehicle as guarantee, and the lender will allow you to borrow an amount based on the value of your car. Once the loan is paid off, the car title will be returned to you. Otherwise, the lender will assume ownership over your car.