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Bosch Solar Energy will unveil its e-bike concept at the upcoming Solar Power International 2010 (SPI). SPI is North America's largest business-to-business solar event and hits the Los Angeles Convention Center for three straight days starting tomorrow. The e-bike concept combines Bosch's newly developed electric drive system with a high-performance thin-film solar station that's designed to recharge the e-bike without using grid power.

Now that bikes – and walking – are becoming more popular, it's time to answer this question: How fast is too fast on a bicycle? How about a bicycle that uses an electric motor hidden inside the frame? We think the answer, whatever it is, is the same not matter which bike you're on and that going 90 kilometers an hour (56 miles per hour) is a bit much for most every rider. Still, that's how fast Hungarian inventor Istvan Varjas claims his "invisible" motor bicycle can go, and it's a l

When we're not dreaming about super-clean cars, we enjoy getting around town on our bikes. Who doesn't? We haven't had a chance to take the YikeBike, the 21st century version of the penny-farthing, for a spin, but the lucky punks at Engadget did, and it sounds like the crew's short hands-on time was enlightening. After just a few minutes on the bike, they managed to reach "fairly high speeds" and discovered that the hand controls are intuitive. While this first version of the bike wasn't the bes

Brammo Enertia and TTR race bike – Click above for high-res image gallery

E-bikes in China – Click above to watch video after the jump

Notice anything strange about the bike in the picture? The bright red hub isn't exactly subtle, but it does hide some impressive tech. Called the Copenhagen Wheel, this is a device developed by the SENSEable City Lab at MIT that basically can turn a normal bike into a connected electric bicycle simply by replacing your standard rear wheel with this one. The Wheel then adds regenerative braking, batteries, general packet radio service (GPRS), and a motor to your ride. There are also sensors to de

Now that the spring weather has arrived in the Northern Hemisphere, some of us can reconsider our daily commute. The leading French newspaper Le Figaro has put together six reasons to keep our cars in the garage and switch to an electric bike.

Click above for a gallery of the EV Board Tracker

We like the idea of electric bicycles and, apparently, the world does too. We've known that electric bicycles have become extremely popular in China but new numbers reveal they're really starting to catch on in Western countries too. In America, for example, where we have rising fuel costs and an aging population, sales almost doubled to reach 10,000 in 2007. Though they say it's partly because of an increased line-up, Amazon.com is reporting a whopping 6,000 percent increase this summer from a

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