Hmmmm....well, if an RV can be counted as a car then I'd say a great car. Why? Simple, I can be a turtle and take my house with me! A great RV means I don't have to worry about things such as property taxes, maintaining any land, loose of property value over the years, the area going down hill around me and being unable to sell my house for what it actually is worth because of the quality of work I put into it...a freakin' mortgage...hefty electric bills or sewer bills or depending upon where I live having to deal with the loveliness that comes with having a well or septic tank....plus I'm not stuck in one area. If I grow tired of a certain area I can move a hell of a lot easier with an RV verses a house with a foundation.
True, RV's can be just as expensive as a house but that honestly depends on how big they are, the special add ons like how many pop-outs/bump outs you have, the type of interior you have such as going super high class and fancy with granite counter tops or solid wood cabinets, things like that. Sure, with an RV you will have insurance still and I believe you need to maintain a certain type of loan on them but its still less expensive than most mortgages. Yes you would have to hook up in an RV park and pay a monthly or so many monthly fee to hook up there for water and electric but it would still be cheaper. Just have to make sure you don't end up in a really shady park. I can still keep my actual car that I would drive to work and the store, keep it on a trailer I tow behind the RV. If My job requires me to relocate it's much easier to get up and go than owning a house or renting a house/apartment....or if I want to move somewhere else to get a better job...
So all in all, I say give me a great RV!