Having read just about every article I can find on the concept, IMO, the reviews seem to be about 95%
positive. Seeing that GM made the investment to make a concept that actually runs, and does so very well, I am hedging my bet that the production version will be just as formidable, ie; high performance and quality.
As for competing with the Mustang and Challenger, I truly believe GM will not be caught "with their pants down", and will offer a model which will perform as good, if not better, than both the Mustang and Challenger.
I'm looking forward to the future.