https://www.nytimes.com/2005/08/27/us/denver-airport-saw-the-future-it-didnt-work.html Sharp corners, for example, were too much for the system to deal with. The whirring baggage carts, programmed to pick up and drop off bags in a perfectly coordinated ballet, often just tipped over and dumped their loads. Then there was the lizard tongue, formally known as a telescoping belt loader, which was designed to shoot out from the track system's maw directly to an airplane's luggage doors. It, too, was a flop. BAE Automated Systems of Carrollton, Tex., which designed the system, has since been liquidated, and no one associated with the effort could be reached for comment. I cannot, to the best of my abilities, find video of the "lizard tongue." Apparently we've figured out "telescoping belt conveyors" in the past 20 years though."The main culprit was hubris," he said.