Looks like the pre-production run is wrapping up (the pre-production cars running around Detroit have been teasing people: http://www.aveoforum.com/forum/f113/...me-nuts-12058/)
As of yesterday, the production version of the car is rolling down the assembly lines at the Orion Assembly plant in Michigan. These cars are going to turn up in showrooms as 2012 models "this fall".
Production isn't yet at full tilt because of the logistics of the car's South Korean heritage:
A higher percentage of parts is being imported because the Sonic's architecture was developed in South Korea, he said. That means GM must consider that inventory and supply line when making manufacturing changes at the plant, he said. Over time, more of that parts manufacturing will be shifted to North America, he said.
The Sonic's engines initially are being imported from Mexico and South Korea, Knight said.