Tesla CEO Elon Musk yesterday said the electric carmaker's full self-driving feature will be completed by the end of 2019. Don't count on it.
Why? Musk has made bold predictions before, telling Fortune in 2015 that Tesla cars would drive themselves within two years. So it's prudent to take his latest prediction, during a podcast interview with money management firm and Tesla investor ARK Invest, with a grain of salt.