When I heard this was a 10.9 car from the factory that got my attention. I would never buy one as I heavily favor exclusivity and aesthetics over all out performance. My 2000 Viper ACR is only 500hp with my exhaust setup and it's just stupid fast for me. Granted I have no amenities or nannies other than what I bring to the table and it's just a blast to drive. The main attraction for me is that you never see vipers around. I see corvettes and challengers all day. For a performance enthusiast, this car is just awesome though. There is A LOT to be said about 707hp WITH a factory warranty. As others have stated, I do NOT see this car going under about 70k out the door though. This is a very very expensive car and very niche. The Shelby GT500, while a great car, is still very similar to other mustangs on the road and people are paying about 60-65k for a car that has more performance than they likely can get out of it and also for the name.
a base of 61k is priced perfectly for this car because anything higher and we get into muddied territory. This WILL be a hit. Just not something I could afford to invest in.
edit: I am not sure what the 640hp Gen V Viper does in the 1/4 but don't think it's 10.xx without some sort of tire mod and outstanding driver (I could be wrong I just don't have the numbers). I would guess 11.2-11.3. I wouldn't think the really heavy and less aerodynamic Challenger would be beating the viper despite the 60ish HP advantage. What I am interested in is seeing how the Viper responds