Inventor William Liddiard invented a wheel with motorized internal rollers that can rotate a tire horizontally. A car with these wheels can move laterally or even rotate about its axis. Following ...

Don't expect the over-the-top design to reach the streets, but Hyundai seems to see the need for cheaper fun-to-drive ...

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The car's spherical wheels combined with two independently moving axles allow it to crab-walk sideways at a 30-degree angle, both a neat party trick and potentially useful for certain driving ...