It's not until the closing seconds of the video that there's any hint of a real colour - a scattering of blue, two orange, a few red, and three yellow. Otherwise it's a see of beige, black, silver, white, and grey.
You can see this for yourself using Google Earth - go look at an airport parking lot in a major US city and it's a sea of monochrome. Now go and look at one in Europe and you'll see a considerable amount of colour by comparison.
Come on, people - black, white, silver and grey are not colour choices. Those are the colours you pick when you can't be bothered to pick an actual colour....Plus, it's worth noting that the four colours with the worst re-sale value are black, white, grey and silver, whilst those with the highest resale value are any colour other than those (Forbes article)
(Video link on Vimeo)
Midday Traffic Time Collapsed and Reorganized by Color: San Diego Study #3 from Cy Kuckenbaker on Vimeo.