For more than a century, motorised vehicles have been banned from Mackinac Island in Michigan - giving the former Revolutionary War battle site a unique charm and turning it into a tourist haven.
The ban is so strictly enforced that when President Gerald Ford visited in 1975, he and first lady Betty Ford travelled by horse-drawn carriage.
But the Trump administration is known for its norm-breaking, and on Saturday, vice president Mike Pence rumbled across the island in an eight-vehicle motorcade.
Mr Pence was on the island to speak at the Michigan Republican Party's leadership conference, the first ever sitting vice president to address it in its 60-year history.