Wow...does that bring back some memories!
We had the same thing happen back in 1995 when coming back from some western riding. I was driving when I crested a hill somewhere in Montana and seen the Eagle on the side of the road eating some road kill. All of a sudden, the Eagle popped up and started flying right across the truck. Hit the bird on the passenger side windshield. Shattered the glass a ripped off the Lund Visor...remember those?? Small glass shards when flying into my buddies lap as he was sleeping in the front seat....He's never admitted it, but I think he may have crapped his pants a little!!
This is where is gets crazy.....Eagle kept flying, came back around to grab his kill, and took off!
Them are some STRONG birds!!