Decades before the race to build a self-driving car became a multi-billion-dollar contest between tech giants such as Tesla and Google, a South Korean professor built an autonomous vehicle and test-drove it across the country – only for his research to be consigned to the scrapheap.
Han Min-hong, now 79, successfully tested his self-driving car on the roads of Seoul in 1993 – a decade before Tesla was even founded. Two years later, it drove 300 kilometers (185 miles) from the capital to the southern port of Busan, on the most heavily-traveled expressway in South Korea.