Mike was kind enough to lead a trip through part of the Mojave desert on Sunday, it was a blast, a good mix of some higher speed desert terrain, some deep sand - which I ended up buried above my exhaust in - a nice flat dry lake bed, and even a couple water crossings.
Here are some pictures from the trip to the Mojave:

Mike's beast 4Runner

Our first stop at a caved-in mine on a hillside 35.039625,-116.823906

In the middle of the dried up lake bed 35.068783,-116.758846

The dog was getting hot, so he got to chill in the cargo space with the AC blasting and rear gate open.

In Afton Canyon next to the railroad, we found a train engine parked.
By random chance a train rolled around the bend not 2 minutes after us parking:

Interesting graffiti.

In Afton Canyon.
The three trucks on our trip:

1. Mike's 4Runner

2. My brother's FX4 F150

3. My 4Runner

Underneath a railroad bridge at the end of Afton Canyon
At the end of our trip we went to see the Dr. Springer's spa at Zzyzx, which is now a Mojave desert study site for the BLM:

[MENTION=15853]Redswan[/MENTION] Let me know if I got any of the info wrong, I couldn't remember the name of the first lake bed - maybe it was Coyote Lake, not sure.
And a couple things I learned from this trip:
1. It's a good idea to have some way of airing down and measuring air pressure - and if you have the funds a way of airing up is nice too.
2. Momentum goes a long way in keeping your truck from burying itself knee deep in sand.
3. Disabling TRAC + VSC is also pretty helpful.
4. When all else fails, a monster 4Runner with a winch can pull you out hahah