BOLT-ON SELF-DRIVING CAPABILITY: Comma.ai will ship a $999 autonomous driving add-on by the end of this year. “The Comma One is a $999 add-on shipping before the end of the year, with a $24 monthly subscription for its software, which Hotz says will be able to drive your car from Mountain View to San Francisco without requiring a driver to touch the wheel, the brake or the gas. This isn’t a kit that makes your car into a fully self-driving vehicle, Hotz is quick to note, but it is a system that can provide powers equivalent to Tesla’s Autopilot, without requiring that you buy a whole new car. “