My wife and I traveled out to Palm Springs without a car, and had no idea how we were going to visit Joshua Tree. Turns out, this is the best way to do it, car or not. Having a guide (we had Louis, my namesake, and also incredibly knowledgeable and fun) show us all the spots we'd have missed driving out there ourselves was ideal. Being shown all the backroads and hidden spots was fantastic. Plus, what a way to travel, the Hummer is a LOT of fun. Would recommend this to anyone visiting the area.