http://www.emtest.com/bindata/bindata/publications/autoEMC_paper_loaddump_may06_rev03.pdfperhaps someone can stick this into a backlight sticky ... I really get tired of explaining that 12V in a car is a lot more than 12V.
It is actually worse than I thought with the standard reliability test putting a 90V pulse with a 0.4S duration on the supply line for automotive acceptance tests!
Edit: got rid of google's spy code in the link