The Anywhere map with a Compaq iPAQ is ûavailable in various iterations.

Remember the LapMap? When laptop computers first appeared it seemed like a matter of mere hours until someone rigged one as a real-time cockpit moving map that was amazing for its day but crude by contemporary standards.

LapMap and its like vanished within a few years, a victim of more sophisticated self-contained navigators and its high nuisance factor—there was simply no place to put the computer. Palmtops helped some but not enough to arrest LapMap’s extinction.

Round two of portable computers in the cockpit is upon us in the form of personal digital assistants (PDAs) that combine stunning displays with blistering processor speed in a small package. It was only a matter…