Gas guzzling NASCAR is going green.

According to Ken Belson of the New York Times, the association, its teams, track operators and sponsors are employing an ambitious set of green initiatives that includes collecting used fuel, planting trees to offset carbon emissions, and deploying sheep to keep the infield grass short.

The decisions are fiscal based.  It saves money, but also had generated new revenue from "green" sponsors.

Belson reports many who work in NASCAR say that reducing and recycling are imperative  because so much waste is produced, and if money can be saved in the process, all the better.

“The incongruity is part of what makes going green in this sport so impactful,” Michael Lynch, NASCAR’s director of green innovation, tells the NY Times. “There’s a bias that the sport is not green and therefore the fans aren’t green.”