Where to begin...
Competing against the Aveo??? First off, they're competing against the xA, xB, and the entire country of Korea, but they'd rather mention US badged cars as competition. That's an attainable goal. Second, the Aveo is the worst car evar. I have never, ever seen Car and Driver pan a car so hard as they did when the Aveo came out. They actually said "don't buy this car". Ouch.
800 Million into their Mexican facility? Why don't they just stop building the damn B13 and B14 over there already. It's only a hunch that they're still in production, but I saw a B13 with a 2004 updated grille while in Mexico.
Look for the Sentra name to move slightly upmarket when they redesign it. Having to cover the $0-19000 range meant 1000's of cheap looking 1.8S running around. Not what a Spec-V owner wants to see all day long.
The huge platform sharing on this car will only mean lots of cool OEM parts. You won't have to wait for the "hot" version to come out in the US. Just pick up the Euro or Jap parts. I am curious as to which motor they have that will do 38mpg. That's a ton. Someone search the international parts pin for an engine code in the 1.5-1.6L range.
As far as the concept car, I could have told you that they'd never build it. Production QR25DET? HA! The good thing is, this news that the Tiida based car will actaully be the cheap car here leaves the spot wide open for the compact sporty rwd that we've all been hoping for.