If your looking for an off road adventure? check out ISAK, they offer nicely modified Land Rover Defenders for rentals a guided convoy tours in Iceland. All the vehicles are modified and equipped with gear to handle the  environments, some note able equipment’s  includes GPS navigation, special front bumper for ice, (Check out this review from CarBibles on the best aftermarket truck bumpers to keep your truck in good shape and protect it from the harsh off-road condition.) VHF long range radio, latches for Hi Lifts, spot lights, an engine mounted air compressor.  ISAK for more details