I think most of the car manufacturers are starting to roll out automatic lane centering for the highway in the most recent models of cars. Also see Comma's Ope

I think most of the car manufacturers are starting to roll out automatic lane centering for the highway in the most recent models of cars. Also see Comma's Openpilot for adding automatic lane centering to a recent 3-4 year old car from Honda, Hyundai, Toyota and others.