I don't know what is in a Walmart Ice Cream sandwich but it isn't ice cream. Ice cream has this weird ability to melt when it is exposed to warmer than freezing temperatures.
Whatever gelatinous chemical bomb this nasty crap is made from is not ice cream. After 75 minutes in the sun, the only visible signs of melting is some nasty watery liquid that has pooled a little on the sides.
This is not food. This is about as food-like as a plastic banana and maybe even less food-like.
The sad part are the comments on the video from deeply ignorant people saying that it tastes good and it probably won't give them cancer. Pretty sure their trust in Walmart to look after their well-being is deeply and badly misplaced.