A couple of blokes joined our local green laning club recently and met up with us in Wales for a days laning. They arrived in 4 and 6 wheeled Pinzgauers. I'd never heard of them before but they were dead capable for what looked like camper vans!
A bit unstable on Pheasant steps but pretty impressive generally. Here's a bit of a video of them.
http://youtu.be/hd7DmGBaNzQ