GM/Buick planning sub-Lacrosse RWD luxury sedan?

A new, small sub-Lacrosse Buick luxury sedan could fit the bill to meet future federal regulations requiring an average fuel economy of 35 mpg by 2020. If given the go-ahead, General Motors would build the new car based on the upcoming Buick Excelle, itself set to debut in China by early 2009 and thought to look like the car you see above. The Excelle is a small, Toyota Corolla-sized sedan that will be manufactured on GM's new global rear-wheel drive Alpha architecture developed out of Germany. If General Motors decides to proceed with the plan, executives will have to determine what North American plant gets to build it, but its proclivity to be driven by its rear wheels should set the small car apart in a sea of FWD compact sedans.

[Source: AutoWeek, Photo courtesy of Sina.autonet.com]