The New Citroën C4 is driving through town, and starts being followed by a number of cyclists. How surprising it is to see a group of bikers crowding together at the New Citroën C4! A squad which gets denser at any headlight stop, under the amused sight of the driver.The secret of this amazing drawing power: the new e-HDi micro hybrid technology which allows the New C4 to turn its engine in sleep mode when stopped, in order to not consume and pollute anymore.