If you have a tower PC and are going to travel with it then you need to learn how to "park" the hard drive. That or swap the drive for a laptop type drive which is designed to take the travel.
I have a "wall top" in my rig, and a lap top...er actually two lap tops now... don't ask. The WT is a mobile desktop solution built about 4 years ago by Industrial Flower Factory up in NH. It has all the bells and whistles of a lap top including the PCMCIA card slot, Flash memory slot, etc etc. It is very sturdy and is screwed to the wall. Even so the drive only lasted about 3 years with all my driving. It's hooked to a nice 20" flat panel and a laser printer... and networked to the laptop on the doghouse / nav station.
Anything is possible.... just keep adding computers.
1984 28' Funeral Coach
Former Rolling Showroom & PuttLab (now party bus)
"I'm not an expert. But I did sleep in an Airstream last night."