Strida bicycles
have been around for a while, winner of numerous awards, the first
version was launched back in 87, and since then has evolved and been
improved into today´s modern version. The triangle shape folding bike is
ideally suited for commuting, it opens and folds in less than 10 seconds
so you can bring it on a subway or bus, it´s also the worlds lightest
folding production bike and can easily be rolled when folded. Also
available from amazon