Chrysler's world HQ in Auburn Hills was evacuated...but I'm about 4 miles west of there and I didn't feel it at all.
I've heard that they got a pretty good shake up in Midland, though.
here is a guide to several scientific investigations that your computer can help out with during your downtime:
http://io9.com/5832600/you-can-be-a-citizen-scientist
the zombies would be easy pickins, because:
a) they'd never attack the robots because they wouldn't recognize the robots as food, and
b) they would fall apart much quicker than the robots would.