The attendant suggested I have them clean the car using a clay process, then apply a coat of wax by hand.

WSJ: Me & My Car: What's the Best Tire Pressure for a Saab?

Their marshmallow bodies get a coat of colored sugar, a pneumatic gun affixes their wax eyes, and finally they're dropped into a cardboard cradle, tucked in with cellophane, and shipped out to the world.

NPR: The Eating of Peeps