[wild1poet2]

Here's an interesting case.

http://www.sportscarmarket.com/content/carrera

Excerpt: "The sole claim against Porsche was that the CGT was defective because it was designed without electronic stability control, which Porsche calls PSM. McClellan deposed two German engineers on the subject, and their answers were inconsistent. One testified that Porsche did not think that its PSM system would work on the CGT because the car’s frame structure and suspension mountings would create strong vibrations that would interfere with its operation. The other engineer testified that PSM was not offered because the customers didn’t want it."