If you register a vehicle in someone else's name, which is necessary before you can insure it in their name, that person will have legal ownership of that vehicle. Just something to think about if you haven't already.
In general bundling will save you a considerable amount of money. Also, read your policy carefully. Many policies only require listing the primary driver of the vehicle, so if you have multiple vehicles you may only need to be added to the policy for one. In my state, the vehicle insurance mandate follows the vehicle not the driver.
Why does that matter? Because our home and our vehicles are insured under my husband's name. Since I'm not the primary driver of any particular vehicle, I'm not on the policy. (The cars were originally titled to him because I had speeding tickets, while he had a spotless record. That's no longer relevant; we both currently have excellent driving records.) How do we get away with this? I work from home and do not drive frequently, and, thus am not the primary driver of any vehicle. In the event of an accident, our policy covers any licensed driver, and our story would be that I don't drive the vehicle on a regular basis. Yes, technically, I should probably be listed on the policy, but I can't justify paying the insurance company any more than I absolutely have to. We've done this for over 5 years and plan to continue doing so indefinitely.