The refrigerator is a fun place

My son, Alex, has a fascination with our refrigerator.  He loves to put toys inside, especially little cars.  Usually he likes to put the cars next to the the tub of butter.  He's even put stuffed animals in there, too, along with dinosaurs.  Yesterday, the cars were back.  But this time Alex added a little twist.  He put the cars in bowls of water.  Not sure if he was trying to make ice cubes or give them a bath.