Here is my current listing of off-road RV manufacturers:
USA
Unicat: Unicat - Go Anywhere Off-Road RV - Vehicles for Rescue, Escape, Survival, or Pleasure
Global Expedition Vehicles: Global Expedition Vehicles
EarthRoamer: EarthRoamer Home Page
Tiger Motorhomes: Tiger Motor Homes - Provan Industries - Home
Xplorer Motorhomes: Xplorer Motor Homes - Home
XPcamper: XP Camper
United Kingdom (don't think they have an RV conversion yet but they can do it!):
Land Rover Specialist Conversions: Specialist Conversions | Land Rover International
Europe
Action Mobil: ACTION MOBIL
The 30 ton, 8x8 Desert Challenger is made by Action Mobil. I reviewed the vehicle here: Action Mobil Desert Challenger: The world's best off-road RV - National RVing | Examiner.com
Julian
National RVing Examiner
USA
Unicat: Unicat - Go Anywhere Off-Road RV - Vehicles for Rescue, Escape, Survival, or Pleasure
Global Expedition Vehicles: Global Expedition Vehicles
EarthRoamer: EarthRoamer Home Page
Tiger Motorhomes: Tiger Motor Homes - Provan Industries - Home
Xplorer Motorhomes: Xplorer Motor Homes - Home
XPcamper: XP Camper
United Kingdom (don't think they have an RV conversion yet but they can do it!):
Land Rover Specialist Conversions: Specialist Conversions | Land Rover International
Europe
Action Mobil: ACTION MOBIL
The 30 ton, 8x8 Desert Challenger is made by Action Mobil. I reviewed the vehicle here: Action Mobil Desert Challenger: The world's best off-road RV - National RVing | Examiner.com
Julian
National RVing Examiner