I'm deciding between a Leaf and a Niro EV EX Premium, and have some questions. Using the adaptive cruise control and lane keeping, will the car drive in stop-and-go freeway traffic essentially by itself, or does the driver need to steer and/or intervene? How well does it work? It looks like there is no high beam assist, correct? And I think there were LED headlights available in a Launch Package which is no longer around, correct? The website says it has projector headlamps. Is that just less efficient, or is one or the other brighter?