People around the world are rejecting their cars for homemade electric bikes!
Parents who want to haul their kids to the store hack their bikes to add power and speed. Commuters hack their bikes to compete with gas-powered vehicles on their way to work. Riders with arthritis or joint troubles are hacking their bikes to give them more mobility. Others just hack for thrills.
CNN.com is working on a piece about the ebike hacker movement - and we'd very much like to hear your story. Share your video and photos of your amazing ebike hacks and tell us how you turned your bike into a more muscular machine.
UPDATE: This assignment is now closed. Thanks for your submissions. Be sure to check out this story about the ebike movement on CNN.com.

