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.
Answer: From my experience of owning slot cars I found that the larger 1:24 scale (about 7- 8 long) are easier to work on -- the parts are larger and more accessible -- and they don't usually require as much maintenance. This is one of the most popular slot car scales in competition circles.