Wiktionary
snakeboard
n. A form of skateboard with two connected footboards, allowing for greater freedom of movement.
Wikipedia
Snakeboard
A snakeboard (also called streetboard) is a board that was invented in South Africa in 1989 by James Fisher and Oliver Macleod Smith. The concept was to take the original skateboard, and to fuse it with elements of snowboarding and surfing to create a fun riding experience. The first prototype was constructed using two square wooden boards, an old roller skate chopped in half and a piece of plumbing pipe to join them together. Many variants were tried before manufacturing began. The first boards to be mass-produced were made from a strong plastic nylon known as Zytel ST801.