The 'bricycle' dilemma - to steer or balance?

(Phys.org) --When you were learning to ride a bicycle you thought gravity was your enemy, trying to make you fall over. But without gravity, you wouldn't be able to steer, say Cornell engineers. To demonstrate the concept, they built a hybrid vehicle they call a "bricycle" - a cross between a bicycle and a tricycle - that demonstrates what it would be like to ride a bike in zero-G. (Assume you have magnetic wheels to keep you on the floor.)