The current generation of bicycle-riding robots (I'm talking about those crazy kids from Murata) are extremely complicated, relying on giant gyroscopes and thick wheels to keep themselves upright even while stationary. This is certainly a neat trick, but it's not something that most humans can pull off. It's not a problem that robots are better at something than we are (by now, we're used to it), but there's something to be said for human emulation, too.
It turns out that getting a robot to ride a bicycle doesn't need to involve much more than a hobby level humanoid employing a relatively simple gyroscope that sends steering commands to keep things generally upright. This KHR3HV bipedal robot (which can be yours for about $2200) has a nifty custom bike that it got from I know not where, and can zip around under remote control at up to 10 kph, even making its own starts and stops: