this comparison is a perfect example of why the new viper is not selling well, the srt10 acr was able to actually beat the ZR1, and at a lower price as well. even the viper T/A which was marginally faster than the acr and zr1 at laguna seca, I remember that when the acr broke the record in 2010, the driver stated that he felt the car could have gotten an even quicker lap, but stopped since they already broke the record.
In any case I still love all vipers and corvette's, I just think it's a darn shame that the new viper couldn't meet or exceed the expectations set out by the acr and the zr1, especially with more power and a higher price.