These Sodor Dairy Cars are part of the Thomas & Friends Wooden Railway System.

The people on the Island of Sodor need milk, and they can always count on the Sodor Dairy Cars -- the Cow Car and the Milk Barrel Car -- to deliver it.  The children of Sodor especially love to see the Dairy Cars and hear the cows moo as they pass by.  This new and exciting addition to the Thomas line plays a "moo" sound when your little engineer slides the side door open to see the cow.  The milk cargo car includes a removable milk barrel.