Was watching "Ultimate Factories" on the Audi R8 and was amazed to see that they mig welded the chassis together by hand..
here is a link to the show

http://channel.nationalgeographic.co.../4544/Overview

and here is a link from icar on welded alloy chassis..

http://www.i-car.com/pdf/advantage/o...008/051908.pdf

Could not find out what type of welders that Audi uses... anybody have any ideas??

thanks
Heiti