Lithium-battery powered two-wheeled hoverboards have swallowed up the youth market whole. But some of them catch fire. Air Canada and a number of U.S. carriers now refuse to take them on board.
Lithium-battery powered two-wheeled hoverboards have swallowed up the youth market whole. But some of them catch fire. Air Canada and a number of U.S. carriers now refuse to take them on board.
