Footage has emerged from China of the moment an SUV driving up a snowy hill slipped backwards and rolled into cars behind it.<br /><br />The video, filmed by a witness in Heilongjiang Province late last month, shows the black car suddenly starting to roll backwards to shouts from bystanders in the area.<br /><br />According to local reports some enterprising locals were waiting at this spot to charge drivers cash for a hand pushing their cars past the tricky threshold.
