John Lasseter Tests Luigi's Flying Tires at Disney California Adventure Park - YouTube
....and perhaps it does, but it is too difficult to pick up the first time around? The speed thing mystifies me too, because you can see from the video just how fast they can get going.
I just remember when this video came out, everyone was salivating at the opportunity to ride it - with many proclaiming that this may be the "sleeper" hit when it opened. And yet six months (and several problems) later, here it is - and all indications are that it is problematic and a disappointment. What gives?