Cheap "hoverboards", which are expected to be under lots of Christmas trees in Australia this year, are being blamed for a series of housefires across Europe and the US. Hoverboards, also known as self-balancing scooters, are small two-wheeled motorised platforms, similar to a Segway but without a central pillar to hold on to. They have become wildly popular overseas and are increasingly spotted on Melbourne's bike paths. In America they are the hottest gift this Christmas...
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