Today, driving a MS we can pass other cars on the freeway at will. It's like they're all standing still compared to the instant acceleration and passing ability of the MS. Even if we use only moderate (but immediate) acceleration, MS can move around other cars very quickly compared to ICE vehicles passing each other. Now imagine sometime in the future, where 90% of the cars have similar performance to today's MS. Everyone's able to accelerate and pass very quickly. Today a quick glance in my blind spot can confirm that I'm free to make a lane change, but if 90% of the cars around me are able to zip into that space almost instantly, has freeway driving in this scenario added some new risks? I'm thinking this could be rather dangerous, especially when you consider some percentage of those drivers are careless or distracted or might actually "floor it" just for fun or to make a really quick pass. Today, vehicle speeds on the freeway are relatively constant compared to each other, but if everyone had MS capabilities, this would no longer be true. Does this mean autopilot (perhaps even allowing it to override my desired lane change) becomes a necessity in such a future?