Great if you have kids.
"Does anyone have to go potty before we leave? Once we hit the freeway I'm not stopping: You're going to have to go in the way back where it's cold and the drivers behind us will be watching."
This has actually been on the market ..hmmm..I think the first time that I saw it was in 98-99 maybe. I thought that it was a great idea if you pack your wife when offroading. She liked the "climbing rock walls", as she put it, but assuming the position against a tree was just a little too much for her.