Chevy returns to the midsize pickup truck market in the fall with the Colorado, aimed at outdoorsy types, especially Californians. GM promises a more refined, quieter smaller truck that can do many things a full-size pickup can. There will be two aluminum-block engines available in the first year, a 200-horsepower, 2.5-liter four-cylinder engine and a 3.6-liter V6 with 305 horsepower. All-wheel drive is available. In the second year, a diesel engine will be available. Six-speed automatic transmissions; two- or four-wheel drive. Starts at $20,995 including shipping.