Piffka,  isn't that the neatest way to travel the tundra?   I've not taken the tour - not yet - but a dream of mine is participating in a scientific excursion lasting about seven to ten days.    The accomodations pretty spectacular for an arctic run - chef prepared meals,  overnight sleeping quarters,   inuet village stops,  etc.    and best of all - photographing wildlife in their natural enviornment.    
If you look at the photo of the tundra buggy above,  you can see where the door <drivers side> and just a bit lower than the viewing area> how the polar bear was allowed placing his face inside the vehicle.   <smooch> 
 not sure i'd be as brave as the driver though