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Petr Gross

Now you can easily put snow chains on your car

After struggling one night to get chains on his tyres on a snowy mountain, Czech businessman Petr Gross decided he needed to come up with something that did the job better. So over the next three years he developed a new device at the back of the car parts factory he runs in the east of the Czech Republic. The result is a mechanized system that fits over the wheel like a hubcap and can be fitted before a journey. It has four arms that, when triggered by remote control, extend to grab the tire, deploying steel spikes…