Green is in.

IndyCar Series uses an ethanol-gasoline mixture as an alternative fuel (a substance that produces less pollution), and early this year, NASCAR announced that their organization will also be making an effort to make their events more environment-friendly.

You can do your part, too. Up for a little DIY project? Here’s a fun one–make your own Earth-friendly Biodiesel using an (insert drum roll here) appleseed processor!

Biodiesel: finished product

Apparently, this kind of fuel substantially decreases your carbon footprints. It’s cheaper, too, so it’s definitely worth a try. View complete instructions here.

Props to the person who shared this information. Just make sure you’ve read all the safety precautions first before starting, fellas.