So, I read this trick works on older third party hardware running MobilEye software. Not newer Tesla "Hardware 3" and software, which I understand is blocked fr

So, I read this trick works on older third party hardware running MobilEye software. Not newer Tesla "Hardware 3" and software, which I understand is blocked from reading speed limits in the first place due to a patent. Are they going to use a database of speed limits instead? Currently MobilEye has the patent on reading speed limits and other traffic signs. How they managed to get it on such a trivial image processing task is beyond me...