Mind-bending indeed, but looks pretty impractical. In an ordinary fridge, if your egg carton is a bit out of place, your door may not close properly. In this one, you're going to have liquid omelette slathered all over the place, and how do you even clean the bottom of that thing?

Well, it's a prototype. Any production model would need to watch for fingers too, so it'd have to be gentle.

Just as elevator doors won't crush a person due to sensors and such.

The cleaning part is an interesting question.