I am thinking that car on the lift was a iteration of what is to be the ZL1, but not the final product..... if you freeze the video, you can see the dual tip exhaust, and also you can see the new farther position of the rear sway bar coming through the lower control arm......
As far as camo..... I will all but guarantee we have NOT seen the REAL ZL1...... not to mention, it could be another "Z" being tested