It is a bit scary, but this is the logical progression of the very first radar-based collision avoidance vehicle that I personally built for GM back in about 95, which generated numerous warning types but applied brakes only. Amazing how long it takes to bring these systems to market. We certainly didn't keep it a secret, as we demoed it for virtually every major manufacturer, and in Asia and Europe, in hopes of selling them the components. Written up in all the trade journals, and even Car & Driver. Maybe it has to do with patents which have or are running out now.