Well first you attach it to your bike.

Then you spin up the wheel.

https://drive.google.com/file/d/0B3_kCL0lNAM9ZjMwUVJWZzRwRXc/view?usp=sharing

And then it fails catastrophically. The light bar is fine, but I only managed to recover one of the three batteries.

Hilarious.

Note: I don't have the patience to turn this into a GIF right now in any quality way. Taking suggestions or help, otherwise this link might disappear in the future!