I was assembling my speeder bikes today, and I noticed something that seemed like a misprint. Then I looked in the Learn to Play book, and it showed the same thing. All, this time, and we've been using the speeder bikes incorrectly*.
The leader is the one with both hands on the handlebars!

He's marked as the leader in the expansion, too, with the "turning"mini designated as just a speeder bike. This is game-changing!
* This is tongue-in-cheek. I don't think it matters which mini is the leader, so long as it is obvious and consistent. However, I'm happy for it to be this way, because it never seemed right to me for the leader of this unit--the guy in front--to be looking backward. The guy in back is the one that should be covering the rear. But, if someone wants to use that as the leader, go for it. Just be consistent about it.