Cars weren’t “officially” admitted to Yellowstone National Park until 1915, but that doesn’t mean they weren’t there before that. One story says that Henry G. Merry drove his Winton Motor Carriage to Mammoth Hot Springs in 1902 to a dance at the National Hotel. He was caught — the story goes — but was allowed to drive out under cover of darkness. Here’s a more colorful version told by Merry’s son.