I stumbled upon this GIF today via Atlantic Cities. It’s oh-so-simple but it does a pretty excellent job at visualising the postive effects of public transport to reduce car traffic congestion. For example, 4 bumper-to-bumper lanes of cards = 1 tram, and if you take away each car there is enough space for every driver to do a pilates class.
Pretty awesome!
http://www.theatlanticcities.com/commute/2013/11/case-against-cars-1-utterly-entrancing-gif/7628/