Poking around the segway web site i found these tid bits:
speed 12.5MPH (20km/h)
range up to 17 miles (28km)
Turning radius: 0
Capacity: 250lbs (110kg)
footprint: 19x25 inches (8 inch platform)
weights: 80lbs(36kg)
The right grip controls yaw (rotation)
comes with 2 keys. one for beginners and experienced.
Adjustable height control shaft.
Two brushless electric motors - >2 horsepower each
NICd or HIMH batteries available
redundant controller boards
5 Inertial sensors are tolerant of extreme temp variation
low pressure tubeless non-marking tires

Still havent found the DIN stereo slot in the specs.