A motorcycle that's fast, silent and green
 

*Source: News.com (http://news.com.com/A+motorcycle+tha...tag=nefd.top)*
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The orange safety bracelet that connects a driver's wrist to the ignition key on the Zero X motorcycle resulted from customer feedback, Zero Motorcycles founder Neal Saiki explained.

The Zero runs on lithium-ion batteries rather than gas. As a result, the engine doesn't make any noise. Before the safety bracelet, riders would dismount, forget they left the engine running, and send the bike on a ghost ride after accidentally twisting the throttle. The bracelet flips the key to the off position.

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