While performance trucks and SUVs appear to be enjoying a golden age in what is now the 2020s, the folks at General Motors during the Bob Lutz Era seemed to be playing with the idea of a performance truck portfolio back in the early- and mid-2000s. The proof of which can still be found in the 101 Motors showroom in Arizona, where TFL Truck got a first hand look. The first is the Chevrolet Colorado Z71 4×4 concept truck that toured the auto show circuit in 2005, and the second is Chevrolet Colorado SS Concept built for the 2004 SEMA Show. The first previewed the Hummer H3T at the time, and the …