If you've purchased a new motorcycle, you probably can't wait to get it on the road. But even if you have an existing car insurance policy, it's important to understand that it won't cover your motorcycle or any liability expenses that occur because of an accident. In fact, motorcycle insurance is completely different from auto insurance and requires the purchase of an additional policy. Chances are, you can add this policy to an existing car insurance policy. It could even earn you a multiple-policy discount on your yearly premiums.