This is one of the weaknesses of traditional automakers. For example, take my experience with Eyesight on my Outback. When I bought it, ACC would use up a good amount of the following distance between a slower car ahead of me before applying the brakes. About a year later, there was a recall for the engine control unit firmware for a non-Eyesight related reason, which to my pleasant surprise also updated the Eyesight firmware. After the update, Eyesight would apply the brakes much earlier when the car ahead slowed down. How wonderful, I thought... I'll simply ask my Subaru dealership to update the Eyesight firmware whenever I bring it in for maintenance. It's been 2 years since the ECU update, and I haven't gotten a single Eyesight firmware update. Either Subaru hasn't improved Eyesight for 2 years or they they have and don't want to pay the dealership to install improved firmware; I suspect the latter.