Today in a tweet, Elon Musk eluded to hardware and software redundancy coming. He then further clarified a question about how this will work: A few questions come up as I think about this: 1. Will each SoC run identical versions of the OS and NN? - If so, will this potentially open them up to simultaneous crashes due to the identical bugs? - If not, could this provide additional resiliency? - Will Tesla possibly operate two NN models simultaneously? - How will Tesla handle conflicting data and/or split brain? 2. Since redundancy is going to play a more significant role as autonomy increases, will Tesla eventually install additional radar sensor, or is the plan to fall-back on cameras? 3. How will redundancy affect uptime targets? Will we be able to achieve five-9's of reliability?