Quick! Take the picture and then grab that ice cream. The top half is perfectly fine. Let's not let some perfectly melted ice cream go to waste just because some of it touched the disgusting car floor. It may not feel right, but that's a totally valid thing to do. Let's say your piece of pizza falls on the floor, obviously you don't want to eat that anymore. Let's say your hamburger falls on the floor though. You still have two thirds of a hamburger that is untouched by germs. Don't fear the floor.
The disturbing thing about this is that this person was obviously about to eat a carton of ice cream while sitting in their car. What's going on in their lives that made them resort to this? I'm not saying that I've never done it, but when I have it's been because I was in terrible shape.