Interesting BusinessWeek article on hydroforming (http://www.businessweekasia.com/magazine/content/02_45/b3807117.htm)

According to this article, hydroforming is actually a cheaper method to form the chassis frame/sheet metal than traditional tool and die processes. Which is why it strange that Bob Lutz said that production would have to be capped at 20K/yr because of the high costs of hydroforming...

-Andrew

is the solstice considered a body-on-frame or a unit-body...i've read both in mags that really should know better...