Didn't BMW introduce a classy moped with a transparent aerodynamic, spherical, open-sided shell to protect the passenger from the worst of the weather a few years ago? A small 'footprint' all right but the design-flaw was the addition of the shell raised the centre of gravity even higher (usually it's in the vicinity of rider's bum on a moped) so the BMW was even less stable than the regular model. Looked beautiful though!