An unusual Lambretta/Rickshaw type contraption from Indonesia, these Helicaks (because they look like a Helicopter, presumably) are one of the odder Lambretta conversions I’ve seen.
They were introduced in Jakarta in the early ’70s, but by the late ’80s were deemed unsafe, as in an impending accident, the drivers tended to abandon ship, leaving the passengers trapped in the fibreglass cab to take the brunt of the collision.