Just like what hoppers4 and homer1959 said, Motorhome magazine prints a list of cars that are towable with all wheels on the ground. Some of those vehicles are stick shift transmissions, some are automatics. I have flat-towed a small pickup (99 Toyota Tacoma) behind a motorhome before. It was a manual transmission that we left in neutral, unlocked the steering wheel and hitched up to the motorhome in a matter of minutes. I have never used a tow dolly to tow a car, but with those you can tow most any front wheel drive and some rear wheel drive cars.
Henk the German Shepherd & Family
2006 Toyota Sequoia
2015 Jayco Jay Flight 23MB Elite
Previous RV's, 1988 33-foot Class A and 1994 Flagstaff Pop-Up