towing an AWD car like a Subaru or an Audi (what I tow) has to be on a trailer. if not it will destroy the transfer case, transmission and other goodies. i read a post of an Audi owner that had his car towed for a parking violation and it destroyed his car. 8k worth of damage.
I tow my Audi on an 18Ft trailer (wanted some room to grow!). downside is that it adds about 2,000 lbs to your vehicle. my 29' bigfoot ran at 5mpg from Colorado to Cape Cod MA this summer (ouch) at 20,000 gcvr. the upside is I had more room to store stuff that would have been in storage like my bicycles, surfboards, wakeskate and that sort of stuff.
I had to make a decision on whether I needed to buy a car to tow, or a trailer. the car would be pretty cheap, but then i would have to manage another vehicle, insurance registration repairs, plus hitch costs. trailer was about 2k with brakes. i can carry a car, ATV's, motorcycles or snow mobiles on this thing.
Space at campgrounds. i stayed at a dozen campgrounds this summer in August while on this trip and noone had an issue with the trailer. some places i didnt need to take it off, only a few places i actually had to remove the trailer, but it stayed right next to my rig. not a big deal.
bk