We had that same thing happen when a car hit a horse on the highway back when I was a paramedic. There was no one left to save or treat when we got there.Speaking of moose, another thing is you don't want to hit one with your car. Unlike a deer, moose have really long legs. When the car hits a moose, it hits the legs, which causes the entire moose torso to ride up over the hood and smash through the windshield killing everyone in the front seat.
One coworker was driving across a very rural area in Alaska. Some dirt road in the middle of nowhere IIRC. They saw a moose and stopped the car (remaining inside). The moose decided it didn't like the car and charged it and head butted it several times. Totalled the car. I don't know if the damage was what caused the total, or the fact that it was in the middle of nowhere and retrieval of the vehicle would have been too expensive. Probably a little of both.
A different friend driving on vacation hit a moose with their full sized pickup truck. Totalled the truck. This was right outside of Durango, CO so not a middle-of-nowhere location where the truck was written off due to inaccessibility. Luckily our friend wasn't injured - somewhat of a miracle actually, but a welcome one.