Espresso fuel (Day 89)

Cooking FatDiesel, petrol and battery power are familiar ways to power our transport. LPG and natural gas are other alternatives.

But there are other more obscure (and sometimes less practical ways) to power vehicles.

Air, waste cooking oil, waste vegetables, beer and spirits, chocolate, nappies (diapers), sawdust, nuts, styrofoam and other waste or co-products all have the potential to fuel cars.

In fact, finding ways to convert industrial co-products into biofuel always seems a sensible and sustainable way to re-use our raw materials – especially for high volume commodities like coffee.

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