Life Recorder
Bruce Schneier writes "In 2006, writing about future threats on privacy, I described a life recorder: A 'life recorder' you can wear on your lapel that constantly records is still a few generations off: 200 gigabytes/year for audio and 700 gigabytes/year for video. It'll be sold as a security device, so that no one can attack you without being recorded."
Bicycles are traffic.
There are restrictions, such as freeways, but this is true for most roads.
Nerd rage is the funniest rage.