A 106-mile portion of I-70 in Utah has no gasoline or exits. It is the longest portion of the US Interstate system without services. A station at one end sells about 30 gas containers a week to people who run out on the highway and walk to the station.
A Japanese engineer by the name of Shizuo Shinoda accidentally scraped some markings into a road with a bulldozer and drove over them, and realized that it was possible to create tunes depending on the depth and spacing of the grooves. In 2007, the Hokkaido National Industrial Research Institute refined Shinoda’s designs to create the Melody Road. They used the same concept of cutting grooves into the concrete at specific intervals and found the closer the grooves are, the higher the pitch of the sound; while grooves which are spaced farther apart create lower pitched sounds. Today, musical roads are known to exist in six countries: Denmark, Japan, South Korea, the United States of America, Mexico and San Marino.
10,000 Iowan farmers built 380 miles of road (entire width of the state) in one hour on a Saturday morning in 1910.
Scientists are working on a technology where the road can charge electric cars as they drive on it.
The first known musical road, the Asphaltophone, was created in October 1995 in Denmark, by two Danish artists. The Asphaltophone is made from a series of raised pavement markers, spaced out at intermittent intervals so that as a vehicle drives over the markers, the vibrations caused by the wheels can be heard inside the car.
Before the interstate highway system was established, it took a military convoy 62 days to cross the United States from coast to coast.
Japan has a network of roads that play music as you drive over them at the correct speed.
Juneau, AK, is the only state capital with no roads leading into or out of it. All travel into it is done by air or boat.