2. There's no other approach to do self driving than "start with the easier problem first". Actually they might have aimed at a too difficult problem - highway

2. There's no other approach to do self driving than "start with the easier problem first". Actually they might have aimed at a too difficult problem - highway truck driving seems like a much easier place to start. 3. Sure, they use maps. But do we know that part of their algorithm there aren't map-free techniques ?