Matt,
I think if you deliberately try to destroy it you can.
Mine has been dropped a few times and been thru alot as I described. I still think the 60 series would be tougher than a dedicated car unit.
I have learned the hard way /ubbthreads/images/graemlins/icon23.gif to use my lanyards and not to hand (Or loan) my expensive equipment (Flashlights, Leathermans, GPS, etc) to others that have no concern for them.
The screen is small but I had no trouble using it in it's mount in three diffrent vehicles, in heavy traffic. It will beep at you well in advance of turns, and then again just before the turn. I am over 6' tall, my seat in the Wrangler is pretty far back and I can follow the moving map at night with the back light on.
Like I said, inputting addresses requires using two buttons so I stop the vehicle before I input an address I am looking for if I am driving.
I hope it works out for you! I really like mine.
PM sent.