I'll throw my thoughts in here... I like the new colorado concept - I think we need more of the european small trucks (and euro/australian market anything, really - Holden Commodore/Pontiac G8, european fords, new Caprice/current Holden product, Toyota Hilux). If they make this concept, or the reality that comes from it, the north american production version, they will have a good little truck.
That being said, the current colorado/canyon is a decent truck, and the new one looks promising, but I'm still a fan of full size trucks and SUVs that I can tow and haul more with.