Along with inventing (I have 3 U.S. Patents- 6,559,556; 7,293,681; 8,561,951) I write fantasy and inspirational military science fiction (www.RobertPWills.com).
I've spent a lot of time in Jeeps with friends. The most fun I've had is when the doors were off. Except getting wind-blown, wet, or taking the wrong exit on I-10 in Tuscon and then you're in a not-so-nice part of town at 11PM. =Not fun. BUT there wasn't an alternative.