A modified Toyota Landcruiser with 35 inch tires and a 6 foot brush guard on the front, raised to like 20 inches of clearance. It has been done for an expedition to Antarctica. Watch it on TLC. These used the brush guards to clear Crevices and I stongly think that they could go up 45 degree inclines. Another contestant would be a raised Land Rover I guess, they can manouever over steeper inclines also I think. God ,I hope that was't a retorical question.
BTw, the 3 spoke Viper rims look like plastic, take the 18 inch BBS's on the ACR!