Whoever is hanging out in Rocky Mountains for Fast Lane Daily should just stay there. Fast Lane Daily’s spy photographer recently caught the upcoming 2010 Cadillac CTS Coupe (could be even named the Cadillac CTC) undergoing some high-altitude testing.

A 2008 LA Auto Show reveal is scheduled in November with sales to begin in early 2009.

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2010 Cadillac CTS Coupe Spotted by Fast Lane Daily:

Source: Fast Lane Daily