Bikers have a special sign they give to each other as they pass on the roads

Hmm, so do (short wheel base) jeep drivers although the "sign" is just a wave. But of course we can tell from a distance if the other driver is in a jeep. Maybe the next version of the empeg needs 802.11 (since bluetooth doesn't have enough range) to alert of an approaching empeg and tell you approximate distance based on signal strength. They could even exchange a favorite song or two as you drive by.

-Mike