Check out the Velopresso - an award-winning pedal-powered all-in-one espresso machine, trike and coffee bean grinder.
Hot water for the coffee - and steam for frothing milk for cappuccinos - is heated using a camp stove. Reid and Oiva, the designers, are researching methods to create ethanol alcohol from spent coffee grounds.
What a totally radical idea. Perhaps it won't be too long before you see Velopresso trikes all over Cape Town delivering a sustainable Java fix.