+1 on an older Civic/Corolla/etc. beater toad. Don't have to worry about it getting damaged from road debris being kicked up by your MoHo.
The option I use because I have been riding motorcycles for 45 years is a small "Dual Sport" bike. Weighs 300 lbs, gets 70 MPG, insures for under $100 a year, and carries 2 people with no problem. I can back up the MoHo without disconnecting it. It also allows me to go where no 4 wheeler can.
Yes, rain gear is necseeary.
(Pink gloves are optional)
Lots of fun on back roads, because you can pull off anywhere you like.
2008 Itasca 37H
2011 & 2012 Len & Pat's "One lap of America"
27K miles & 41 states in 13 months
Yellowstone Lake 6-1-2012