Tanner, Rutledge and Adam wrangle, haul and race their way across Texas in a crazy attempt to find an alternative to the pickup.

Which is the toughest truck in America? Tanner, Rutledge and Adam head into the mountains putting their trucks through impossible tests. Plus, Tanner takes a new off-road vehicle to the Louisiana swamps to race an air-boat. And comedian Bill Engvall stops by the Top Gear test track.