> That seems outrageous though There's a good reason oil is so hard to give up. [6.1 GJ worth of crude oil](https://en.wikipedia.org/wiki/Barrel_of_oil_equival

> That seems outrageous though There's a good reason oil is so hard to give up. [6.1 GJ worth of crude oil](https://en.wikipedia.org/wiki/Barrel_of_oil_equivalent https://en.wikipedia.org/wiki/Barrel_of_oil_equivalent) costs about $70 USD.