Convenience, the fact that you're not standing around waiting on the shuttle. I used to watch them go by while I waited for the other company I used to use. Not anymore.
We love The Parking Spot! The driver's are so courteous and helpful. Our driver last week made each customer get in their car and turn it on before he departed for the next drop off just to make sure the car would start and that battery didn't need to be jumped. I call this EXCELLENT customer service!