Don't start planning for your self-driving commute anytime soon. Human drivers are still very necessary as a recent road test for five cars' driver-assistance features showed.The vehicles, 2017 BMW 5-series with "Driving Assistant Plus," 2017 Mercedes-Benz E-Class with "Drive Pilot," 2018 Tesla Model 3 and 2016 Model S with "Autopilot" (software versions 8.1 and 7.1, respectively) and 2018 Volvo S90 with "Pilot Assist," were put through their paces as part of a Insurance Institute for Highway Safety, or IIHS, road test.SEE ALSO: Heres the fundamental flaw with self-driving cars: HumansThe results weren't so grand. In tests for adaptive cruise control, or ACC, in four different scenarios and lane-keeping on three hills and three curves the cars did much better on tracks than out on the road. Only the Tesla Model 3 stayed within the lane on all 18 trials for lane keeping. Read more...More about Tesla, Autopilot, Autonomous Vehicles, Semi Autonomous, and Tech Click here to read full news..