Inventor Chris Toal's Cranklock system, as you could guess, locks the cranks on a bicycle to give it motorcycle-style cornering. He claims that by locking the cranks, you lower the center of gravity to the inside and away from the saddle and handlebars. He tested it and found that it gave riders a 20-second advantage on a 3km downhill course. The cranks can be locked in at 90 degrees, either foot forward, so he recommends you lock the inside foot in as it's forward.
Now, I spend a bit of time on a bike, and I have quite a few issues with this concept. When going around a tight corner, I want to be able to regulate the position of my pedals to prevent them from hitting the ground as I lean into the turn. Second, for more control and speed through a turn, I want to put all my weight on the outside pedal, and I want to be able to shift my weight quickly and easily if there's an S-turn immediately up ahead, or be able to quickly swerve around an obstacle. Third, most cyclists have their weight off the saddle and on their feet through a turn anyway, with your weight over the bottom bracket. And finally, is it really that hard to put your feet in that position and just balance your weight yourself? Bicycles have very different weight distribution than a motorcycle, in addition to significantly skinnier wheels.
Is this a dangerous solution to a problem that doesn't exist?