The article doesn't link to the study. Here it is: http://www.pnas.org/content/e...

		patmcguire on Jan 3, 2017 \| parent \| context \| favorite \| on: Study: carpooling apps could reduce traffic 3x in ... The article doesn't link to the study. Here it is: http://www.pnas.org/content/early/2017/01/01/1611675114.full...