Especially preferred, a remote control receiver 32 is attached to {TAIL ~ processing and control unit} 30 and {HEAD ~ receiver} 32 is responsive to commands from a remote control transmitter 34, such that a user can remotely operate the device of the present invention 
Especially preferred , a remote control receiver 32 is attached to { TAIL ~ processing and control unit } 30 and { HEAD ~ receiver } 32 is responsive to commands from a remote control transmitter 34 , such that a user can remotely operate the device of the present invention
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH