In pure electric mode — a paltry 24 kilometres though it may be — the i8 is almost too silent, BMW having managed to make
carbon fibre construction not only semi-affordable but also comparatively silent (the
rigid structure of
carbon fibre tubs can render cabins a little boomy, not a huge issue with the supercars that currently employ the lighter - than - metal weave, but important if it is ever to revolutionize the garden variety sedan).