No, you don't need to cancel your car insurance when you switch. In fact, it's generally a good idea to keep your insurance until you're sure you won't need it anymore. There are a few things to keep in mind, though. First, if you cancel your insurance, you may have to pay a cancellation fee. Second, if you cancel your insurance, you will lose any unused premium, which is the money you paid for insurance that you didn't use. Finally, if you cancel your insurance, you will not be able to get insurance again until you reapply and are accepted by an insurance company.