The ZL1 is impressive, but comparing its run to that ACR run isn't very accurate. The 2010 run is essentially the same car and ran 10 seconds faster than the 2009 attempt.
If I was in the market for a brand new pony car, this one would be at the top of the list. Unfortunately for me, I'm too poor to buy brand new cars of this caliber.
It's an official time of the 2009 ACR, which by the way is no slouch. It doesn't matter if it's the new or 2009 model, it's valid. Just like the comparisons to the ZR1. IF that's you're opinion, fine, but the facts are the facts.