Latency is very much a function of how your city is laid out. For my Boston commute, the bike is by far the fastest option (30min) followed by the subway (40mi

Latency is very much a function of how your city is laid out. For my Boston commute, the bike is by far the fastest option (30min) followed by the subway (40min, ~$70 monthly pass) and finally the car (1hr+ and $250 a month to park at work). Boston is more of an Old World city than New: despite the complaints, we have a functioning transit network and it's quite dense. Self driving cars will lead to a death spiral of congestion. Because driving is even "easier", it will become more prolific and that will greatly increase travel times because cars simply can't scale, autonomous or not. And no, autonomous cars won't be legally allowed to drive bumper-to-bumper to save space.