Edit this Published in Freakonomics Radio Hey Baby, Is That a Prius You're Driving? Listen Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/164250/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend "Conspicuous conservation" is about showing off your environmental bona fides. In other words, if you lean green, there's extra value in being seen leaning green.