By far the cheapest car insurance is USAA. If you can find a way to qualify, then get it. (You need some connection to the military to qualify for Uniformed Services Auto Assoc USAA)
I have USAA and they are very good.
Thanks for the tip, but I doubt if I qualify.
I have USAA on everything except that, at least in Tennessee, they don't offer insurance on motorcycles so I ended up putting that with Progressive because it was one of the companies USAA referred me to at the time of purchase. Actually, I'm planning to move it to GEICO when the policy expires.