Post #30, you may be right on that account because Motorweek's test seemed very optimistic of the zl585's performance. Be that as it may, it is a published test (along with R&T, MT and Edmunds) of a stock car using a standard parameter of speed and turning radius distances. FWIW the same three sources tested a z06, and while Road and Track and Edmunds' numbers for it were spread out further from the zl575, it was strange that Motorweek's numbers for the zl585 seemed almost dead on with their test for a z06. Its for that reason that I am more inclined to believe Road and Track and Edmunds' more conservative lap times for the zl(zl575).
^It will be interesting to see how the zl585 and chevy's zl1 will compete against each other, with the
zl1 bringing in a competitive suspension, tire and wheel package. Value is a very hard thing to predict...it will depend on how many units will be produced, how good a car will be in its use, and a lot of other mysterious things that goes into a car's image.