>Why are people weirded out by some Google Glass-wearing rando filming them on the sidewalk but ok for everyone behind a wheel to be suddenly promoted to a CCTV omnisensing recorder?

Pedestrians are promoting dense and walk-able cities, environmentally sustainable transportation, healthy lifestyles and are generally virtuous. Drivers are wasting space, killing the planet, promoting a sedentary lifestyle and are generally evil.

Yes I'm being a bit absurd and over the top here but the point is that most people aren't disciplined enough to stick to their principals when a group they don't like is the one getting screwed.