I've used Horseless Carriage twice -- once with very good results and once with mixed results.
The mixed results episode was about 5 years ago. it took many weeks and numerous phone calls to finally get the car picked up in Michigan to be transported to FL. It took so long the seller started to get annoyed and was bugging me to get the car out of his garage. When the car finally arrived
I had to climb up to the top ramp 
and back the car out while the truck driver lowered the ramp. I wasn't too thrilled having to help unload the car...
John