If she knew more about vehicles like that she might worry, but she didn't. In Rainbow's mind, he'd magicked the bike to fly, so now it could fly!

"That's more like it!" she called out, stretching her forelegs out and flattening her body so she was all the more aerodynamic. She shot ahead, turning a few neat rolls so the motorcycle had to fly through a rainbow corkscrew tunnel as she fell into place in front of it.