Would you be towing your daily driver? Unless your daily driver is a 1-ton pickup you'll be looking at Class A or Class C motorhome. And since class C's typically only have enough power & suspension to handle their own weight you'll probably need a Class A motorhome. Diesel, because diesel's can sit from time to time without the problems associated with letting a gas motor sit. Plus they have the power to tow.
They're not fuel efficient, but you'll be driving your daily driver most of the time.
You can find a nice used class A for around $100,000. Then you'll have to pay to park it.
It's quite a commitment. Have you considered just apartment hopping, or extended stay hotels?