Hot and Cold Freezers

The freezers being tested in Central Park operate free of electricity — vendors can even charge their own mobile devices by plugging them into outlets attached to the freezer units.
It seems fitting that Unilever, the world’s largest producer of ice cream, is rolling out the world’s first solar freezers in Central Park to keep those Popsicles, Good Humor or Magnum-brand bars cold while at the same time putting no strain on the environment.