And here are some interesting tidbits from an article about the Orion plant:

GM has said the Orion plant, which is retooling ahead of a 2011 launch, will be able to make as many as 160,000 vehicles on two shifts. But analysts expect demand for the Aveo, which will have a five-door hatchback and four-door sedan, will require only 60,000 to 70,000 units annually.
GM has said it hopes to sell its new small cars with more content to make them more profitable, but no one knows whether consumers will go along. For instance, the current Aveo had an average transaction price of $13,887 from July 2009 to June 2010, according to price researcher TrueCar.
Of note: The Aveo will be the smallest vehicle produced in the United States.
More: http://www.autonews.com/apps/pbcs.dll/a ... F308059998