Yandex claims that its autonomous cars have driven 2 million miles to date, double the figure it reported in October and 4 times the number announced in August. The Russian tech titan revealed the latest milestone in its Q4 2019 financials earlier today. Additionally, Yandex shared for the first time that it has invested $35 million in its self-driving program since its inception, $24 million last year and $9 million in the fourth quarter alone. By way of a brief recap, Yandex's on-demand transport subsidiary, Yandex.Taxi, unveiled its self-driving car program back in May 2017, shortly before it began piloting the vehicles on Moscow roads. In the intervening years, the company has expanded its fleet across Russia and Israel (Tel Aviv) and to the U.S. (Las Vegas). It also laid claim to being the first public autonomous ride-hailing service when it launched a pilot in the Russian town of Innopolis back in 2018.