No, that's not it. They're keeping track of Lyft drivers in the area so that they know who to cancel, not so that they can avoid canceling rides. And, look, i

No, that's not it. They're keeping track of Lyft drivers in the area so that they know who to cancel, not so that they can avoid canceling rides. And, look, if they could hail specific drivers that they'd never talked to before, I'm sure they would. But they can't. They don't control who Lyft matches them with. It sounds like they make some attempts to avoid just hailing the same driver over and over again, but sometimes they do hail the same guy over and over again, and in that case, they cancel.