Rosmar teaches an Audi A8 to walk — and calls it a hypercar

Romanian company Rosmar H has built an Audi A8-based prototype whose rear wheels slide fore and aft. The slow-crawling demonstrator genuinely moves, but the company’s claimed 0–100 km/h time of 0.3 seconds currently belongs in the same category as flying cars and perpetual-motion machines: easy to talk about, rather harder to prove.