Here's a topic I wouldn't mind seeing being pursued more.
I love how she crushes and jumps on those plastic cars and hearing her commentary.
With all the sharp peices and irregular surfaces how it doesn't even seem to phase
her, actually she quite enjoys it and makes mention how she only feels it on the
soft parts of her soles. Which means she probly has some tough callouses.
You can see scratches on the sides of her feet, but nothing on her soles.
Her feet are slightly dirty and you can see peices stick to her soles, yet she keeps
jumping on them.
Check out the other associated vid's (this is one my favorite vid's).

This shows what beautiful lady can do with their feet, the perfect contrast

http://www.youtube.com/watch?v=H5hj-e6lVD8...nel_video_title

I also noted, soft plastic like pop bottles would just bend. To get the brittle cracking
needs a more ridgid material, thus sharper edged more pointed shards.
So, the better the breaking and crushing, the tougher the models feet must be.