On Saturday, a long stretch of Broadway—from Times Square to Union Square—went car-free. The event lasted six blissful hours, but at the strike of 4 o'clock the cars returned to the streets to continue the battle of machine vs. man, while making sure New Yorkers were breathing in their daily intake of carbon emissions.

Photographer Scott Heins was on the scene and reports back that "things felt like a slightly more calm and beautiful version of normal" on Saturday when the cars were banished. Really makes you think.

Below, slide over the images for a look at Broadway with cars, and without cars. With cars, and without cars. With cars, and without cars...