Met a guy with a Sportsmobile while on a too short holiday in Zion National Park a few weeks ago. A bit pricey but the coolness factor is incalculable.
With a 40 gallon tank and the diesel engine, you're looking at least 700-800 mile range, more if you carry a few cans of extra fuel.
_________________________
JohnE
"and all the lousy little poets
comin round
tryin' to sound like Charlie Manson"
The Future/Leonard Cohen