In the early years of Route 66, many motorists brought their own food along with them and cooked it on the road. Constrained by tight finances and a mistrust of the unknown quality of road food, these earliest travelers were often reluctant to eat out. By the 1930s, this attitude had eased somewhat, and more motorists were eating out along the road. As drivers and automobiles on the road increased, so too did opportunities for fast food. One pioneer in this field was the White Castle chain, founded in 1921; the oldest White Castle restaurant on Route 66 is still in business in Berwyn.