General Motors has delivered what it claims is the toughest mid-size ute of them all, a go-anywhere one-tonner based on the Chevrolet/Holden Colorado. It’s the Colorado ZR2 Bison, built in collaboration with premium after-market company American Expedition Vehicles (AEV) and on sale in the US next January. It appeared as a concept at the SEMA show in Las Vegas late last … [Read more...] about Colorado ute toughened up by US off-road specialist AEV