I saw a (Large, Tough, Laptop) a few weeks ago ont he discovery channel. Let me see if I can find it... hold on.
Ah crap, I can't find it...
But, they ran it over several times with a HUMVEE. Dropped it from a 4th story Dorm window, Buried it in athe sand at a beach... spilt a huge slurpy on the keyboard.. and tons of other tests... It was a total mess why they were done with it, but it booted and ran just fine.
I do remember it have god aweful components inside though... And it was over $4000.00