You cannot legally import the car unless it is legally in your name only with no lien attached. Actually the car deed would likely be in one person's name. You can have as many people on the same insurance policy on the car for insurance purposes but there is only one owner. For example, my wife and my name are on the insurance policy on my car but the car ownership is in my name.
Look at the vehicle permit for the car. There is one name on it. Whoever's name is on the car is the legal owner of the car. Only one name is allowed for vehicle license plate purposes along with other reasons. In Ontario for example, the plate sticker renewal is based on the owner's birth date. It expires after the owner's birth date. How can you determine which expire date to use when you have multiple owners, multiple birth dates. Doesn't work that way.