US investigators have opened a probe into Tesla’s self-driving technology following four reported incidents – including one fatal – linked to the technology last year. According to Reuters, the investigation will involve more than 2.4 million vehicles equipped with the full-self driving system (FSD), and could lead to a major recall if the US’ National Highway Traffic Safety Administration (NHTSA) deems there is a risk to public safety. The investigation was opened following four reports of crashes where the full-self driving system was engaged in times of low visibility from sun glare, fog an…