Perhaps the moose was related to Rudolph? Magic Flying ability and all that. Or maybe had been smoking quite a lot of weed, allowing it to float across the highway. I was thinking Moose Ping-Pong myself.

Possibly an update with clarify it. Hope the driver makes it through the hospital stay with no permanent injuries and recovers quickly. Moose impact is almost always Very Bad Juju. Their eyes do NOT shine in headlights. With winter coming it's going to get more dangerous.