An Ekstensive favourite, a 2001 Hummer H1, needs some serious reinforcements; Bill changes things up on his completely custom, all-tube buggy by borrowing technology from monster trucks; Bill puts his daughter to work customising her 2020 Challenger.

The Mecum Auction comes to town, and Bill runs four vehicles across the block with shocking results. The team starts their next monster build, a custom all-tube buggy. Building an indestructible cage requires all their fabrication skills and then some!