Rebuilding Together Charity In conjunction with WD-40 Company, Xtreme 4x4 takes an '08 GMC 1 ton dually, and transforms it into the ultimate work truck, which you can bid on! Bumpers, lift kit, power enhancers, bigger fuel cell are just the beginning of this installation which is capped off with 22 inch big rig wheels. After this truck goes on the road promoting WD-40's "Last Straw Tour", it will be auctioned off for charity with the proceeds going to Rebuilding Together and their Housing Program. Ian and Jessi pitch in - not only by building this big rig, but by volunteering at a "rebuild" event at a local veteran's home.