[masraum]

Yep. They turned into our in front of the biker who may or may not have been flying.

With the information available cart likely turning left, all the dead, I think they turned and the biker T-boned them.

It's impossible to say with the information, but my guess is that the biker was hauling ass. But it could have been that they pulled it in front of a biker going the speed limit.