Just a follow up to an old post about electric cars: While the daily commute for most people is within the range of current EV battery technology (about 60km, I believe), this limited range is still a major obstacle to the mass adoption of non-hybrid electric cars. One interesting solution is to separate car-ownership from battery-ownership and create battery switching infrastructure. Rather than stopping in a gas station, you would stop in a battery-switching station, have yours removed, a freshly charged one installed, and be on your way, all in about the time it takes to fill up a gas tank. You might think the idea is a bit pie-in-the-sky, but a start-up in California has already designed such a station and demonstrated it in Japan. Here' s the video:
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