Judging by this commercial for the erstwhile Indiana-based national restaurant chain, Burger Chef, patrons were allowed to sit on the roof and ride horses around the parking lot. There’s not a Burger Chef anywhere in the country anymore, but at its apex, only McDonald’s had more fast-food locations in America. Founded (almost incidentally) by Frank P. Thomas in 1957 in Indianapolis, the chain of hundreds of outlets was sold to General Foods in 1968. That company subsequently sold the restaurants to Hardee’s in the 1980s, which discontinued the brand. An excerpt about Burger Chef from the Encyclopedia of Indianapolis:

“In 1957 Frank P. Thomas opened a pilot restaurant at Little America Amusement Center to promote and sell the automated hamburger grill he had invented. Failing to sell the grill but successfully marketing his 15-cent hamburgers, Thomas instead opened the first Burger Chef.”