Close! It's pretty tough--at least the older ones were. Nothing's indestructible but if you're looking for a tough, reliable truck, you've found it!
I imagine you've seen this, but in case you haven't, here's part 1 of Jeremy from Top Gear trying to destroy a mid-80's Hilux diesel.
http://www.youtube.com/watch?v=xnWKz7Cthkk