A wireless transmitter connected at your waist ensures the cart remains just feet behind you. Click on the "park" button and your shadow stays off the greens and out of sand pits. Collision sensors make it avoid shrubs, tress and other golfers. And a reverse button helps get it out of any unexpected jams. Previous attempts at such technology required remote controls adding complexity that made it appealing to gadget gurus but impractical for weekend warriors. The company is pursuing other application for the technology in the transportation, defense, postal and agriculture markets.