It is supposed to lock up to protect it if the shock is bad enough. Does it work? I know if i set it down hard enough it locks up (everything will freeze for a second), but I don't know if the protection is great with the stresses of driving. Or maybe it does work well and will get annoying when it locks up all the time if I am watching a movie or running conzult while on a bumpy road. I just have not used it enough to know yet.
The other problem is that my power source plugs in right where the back edge of the laptop presses against the dash. This currently prevents me from charging or plugging in usb devices. Eventually I'll rig something up to hold it far enough away so I can.