Years ago, BMW announced a pair of “urban mobility” scooters, the C600 Sport and C650 GT. Now a third scooter, the C evolution, functions as seamlessly as its internal-combustion alternatives. It is, however, large. The two-passenger C evolution weighs a claimed 606 pounds, a porky 117 more than BMW’s traditional 1,170cc R nineT boxer. Power comes from a 48-hp liquid-cooled electric motor nursing a 133-volt lithium-ion battery, plus regenerative braking. An onboard 110-volt charger tops up the C evolution battery overnight, but 220-volt charging cuts this time by half.