Mind Puzzler…Can you figure this one out?

We’ve all heard of the mind puzzle, “You come across a dead guy hanging from a noose, with a pool of water underneath it: What happened?” You’re supposed to figure out why there’s water, why the guy is dead, and how he did it. And maybe try to figure out why you’re standing in a room with a dead guy hanging from a noose…maybe that’s the bigger question.

I have one of my own that I’d like you all to try to come up with an explanation for. Winner will get major kudos and a big, sappy post about how I loved your explanation most, and how your blog is the most fabulous in the whole world, and shit.

Now, this is a true story:
A guy and his co-worker were carpooling to work down a busy back road, to avoid using the interstate, and they came across this scene:
There is a car lying on its roof on the side of the road. A few hundred feet down the road is a large deer, unfortunately dead, by the side of the road. A big bale of hay lays scattered all around the whole scene. What happened?

Comment below for your awesome take on this exciting puzzle. Later I’ll tell you what I came up with.