We own an Outback and a Forester, Both must be carried on a flat bed trailer because of the 4 wheel drive setup. Your car may be the same. I wouldn't want to tow a large trailer with vehicle using any Class C. If you have a trailer setup but won't always need the car, leave it home, you can rent a car at your destination, or have family members drive car separately to your destination. Motorhomes don't usually have crash-safe seating for five. You can disconnect a class C from hookups in 5 minutes for occasional trips into town or local sightseeing. RV'ing has compromises. My opinion, you need at least a 26 footer for comfortable sleeping in a rear bedroom for the main couple, others will have less comfortable sleeping in the overhead or on convertible sofa bed/or dinette. Short rigs are slightly more maneuverable but sacrifice sleeping comfort and overall storage space. A cluttered motorhome gets on your nerves after a week or so.