VOLT gets down and dirty
 

GOOGLE IMAGES: GM Testing VOLT will get you to a photo of dust intrusion tests conducted on the VOLT at a US Army facility.You can see the clean separation line at the boot/trunk.

Can you provide a link to the particular image you reference, here? I looked and there quite a few images listed; I didn't really see a "clear separation line" (or didn't know what I was looking at) in any of them.

-soD

...that's at the U.S.Army Automotive Tank Command Test Track at Yuma Proving Grounds

...I recognized 'Castle Dome' Peak in the background; and I worked there 1972-1982.

http://gm-volt.com/wp-content/upload.../volt-dyno.jpg

...the 'dust test' pix:

http://www.earthtechling.com/wp-cont.../volt-dust.jpg

Judging by that dust test, GM could have made the Volt bigger, and stretched the rear a bit to make the rear deck lower to a lower Cd, more space for batteries, thus higher range, and just a bigger car to cater to Americans better.

Not even to better cater to Americans - but even just to move the battery lower and make the back seat capable of holding 3!