Some ideas are simple (a rusty colander becoming a hanging garden planter), while others are downright feats (how to convert an old diesel car to run on vegetable oil).

FORBES: Magazine Article

Instead of buying a new gas-guzzling vehicle, convert an old diesel car to run on either biodiesel or vegetable oil.

FORBES: Magazine Article

The car must run on diesel for five minutes after startup to heat the veggie oil to the proper temperature.

FORBES: Veggie Oil Smells Better Than Diesel, But It's No Slam Dunk