This sounds like a good way to break both legs if done on a recumbent during an emergency stop.
Now i'm confused. I could be wrong, but i'm going to go ahead and say what I think they're talking about.
I think they are talking about upright bikes with "flat foot technology" like the Electra bikes. The cranks are forward of the seat post, allowing the saddle to be much lower to the ground, so you can put both feet on the ground when you stop.
The point is, a LOT of people won't ride because they have difficulty leaning the bike over so they can plant one tippy-toe on the ground. Or they ride with the seat much too low, and then get fatigued and sore when they ride around the block. It seems strange to us--leaning over when we stop is instinctive to us--but it is a MAJOR block to cycling for many people. Electra is making big sales because they're one of the first American manufacturers to understand the problem.
