So Local,
Great idea. You will not lack for customers. You should, however, check with your insurance carrier before you start driving someone else's forty thousand dollar SUV around. I understand that some shuttle operators have been bit in the butt because they bent someones tow rig and got sued. Another way to address this problem is to have your lawyer make you a disclamer absolving you of any responsibility. Wouldn't surprise me if you can't find a good one on the web. Good luck on this venture. This is a service that is sorely needed on the good old Nooch.