I'm with Tatest on this,except I always pull a toad because I'm always headed to some attraction. The historic Triangle of Williamsburg, Jamestown and Yorktown all have pull thru parking for RVs at the attractions, but not in the towns.
Yellowstone/Tetons can be driven (mostly) but the bigger the vehicle, the rarer the parking place to pull over.
A lot of the Peter Norbeck Trail in the Black Hills can't be driven in a MH. The drive up to Mt. Rushmore and Needles highway have narrow tunnels, pigtail bridges, and tight 180 degree curves.
BUT - because of that, many of the RV parks in those areas have connections with rental car places like Enterprise.