3 ms·Why not self-driving buses? That will be next.by relyks 3y agoWhy not self-driving buses? That will be next.willio58 3y agoThe thing that’s great about metros is that you’re not stuck in traffic. Of course in SF it’s like a metro/tram hybrid which is okay but not great.relyks 3y agoYeah, I agree. I actually prefer trains