SFast Lane Daily's insomniac spy photographer, Keith, spotted this abundant collection of General Motors products taking a break from some high-altitude testing in Colorado's Rocky Mountains. Most obvious is the 2010 Cadillac CTS Coupe, but also tagging along were a couple of small hatchbacks, one of which looks to be the 2011 Chevy Beat. One shot even shows what could be the 2011 Saturn Aura, or perhaps just the European Opel Insignia. All that and more in today's episode of Fast Lane Daily. Video after the jump.