But courtesy of Gizmodo, there is a solution. Just take your lightweight Yamaha XT220 trail bike with you and *fly* in to those areas! Yeah the dirt strips in Death Valley are kinda a pain, but hey, it's better than spending 9 hours riding only to end up with a too-big bike once you get there, right?
Of course, the other possibility is to just hitch a trailer behind your car and haul your trail bike behind you. That's a little more affordable for this flightless waterfowl, as well as a bit safer than flying a light airplane into a dirt strip, heh!
-- Badtux the Flightless Penguin