Reading the Blue Ox web site, there are three choices, depending on the weight of the bike and the vehicle being towed.
Motorcycle Carrier I
Sport Lift I
Sport Carrier I
look like they will allow a vehicle to be towed. Consider determining the weight of the bike, car and the capacity of the coach for hitch and total towing weight. Also, contact BLue Ox for a dealer near you. Tell them what you want to do and see what they have to say.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours