Sony's racing AI destroyed its human competitors by being nice (and fast)

But Sony soon learned that speed alone wasn't enough to make GT Sophy a winner. The program outpaced all human drivers on an empty track, setting superhuman lap times across three different virtual courses. Yet when Sony tested GT Sophy in a race against multiple human drivers, where intelligence as well as speed is needed, GT Sophy lost. The program was at times too aggressive, racking up penalties for reckless driving, and too timid, giving way when it didn't need to. Sony regrouped, retrained its AI, and set up a rematch in October.