Canada gets cold. Very cold. So Duracell thought they'd set up a bus shelter to help keep the folks warm - with one condition. People waiting for a bus had to complete the circuit to generate heat by connecting with each other.
I know! Human contact. With strangers! You don't know where they've been - and they're the sort to take the bus.
Mind you they are Canadian, so they're probably very nice and fairly clean.If they installed these here in London, we'd probably just freeze...
Source: http://www.thedenveregotist.com/