BackgroundFrom the 1978 JC Penney Christmas Catalog:
Land Speeder is Controlled by Sound! Looks just like Luke Skywalker's vehicle in Star Wars. It travels along by itself, and the remote control clicker (looks just like R2-D2) moves the Land Speeder left, right, forward, or back -- from up to 16 ft. away! Has hidden wheels so it seems to float. Can carry action figures... 10.97
The Sonic Land Speeder was available exclusively through JC Penney between 1978 and 1980. It was more than twice the cost of the standard Land Speeder ($10.97 vs. $4.97) but promised remote-controlled operation. And even more exciting, it was controlled by sound!
Operation is not as "controlled" as one would expect, however. When in the "on" position, the Land Speeder is in constant motion. The drivewheel locks in four positions and moves the vehicle forward, right, back, and left -- in that order. Each time the clicker is activated, the drivewheel is allowed to advance to the next position. For example, if the Speeder is moving forward, a click of the remote should send the vehicle into a right turn.