The egg is the largest cell in the human body and contains a high amount of water. When the egg is frozen, the ice crystals that form can destroy the integrity of the cell. To prevent this, the egg must be dehydrated prior to freezing.
A slot car (sometimes, slotcar) is a powered miniature auto or other vehicle that is guided by a groove or slot in the track on which it runs.
To a certain extent, CarHop is to used cars and sub-prime car lending what Las Vegas casinos are to gambling. The odds are still in the house's favor, but at least they're consistent with a fixed set of rules that everybody understands and can act accordingly.