It's still a hefty bicycle, however. At CES 2018, I was able to sit on the saddle and, for a moment, pretend I was gliding down the streets of San Francisco. (I would have ridden it for real, but a crowded convention hall didn't feel particularly safe.) The motor is always-on and will kick in as soon as you've unlocked the bike. The battery is hot-swappable, though you can't replace it yourself — LimeBike's staff will be roaming around and refreshing batteries in between rides. If you're interested, it'll cost $1 to unlock and an additional $1 for every 10 minutes that you're riding.

LimeBike operates in a bunch of US locations including Seattle, Miami, and the greater San Francisco bay area. (The company also expanded to Zurich and Frankfurt, its first European markets, last month.) The Lime-E will be added to the company's existing fleet later this month — a useful differentiator, perhaps, from the countless other bike-rental services that have been popping up around the world. Electric-assist bikes aren't for everyone, but if you want to be just a little healthier — while still getting around at a decent pace — this could be an option worth considering.

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