We haven't tried the new bicycles from Strida, but we'd like to. If they are half as good as the promo material, you can take them anywhere.
Strida are the new generation of folding bikes. They are lightweight and distinctively styled.
Their design ensures a good view of the road and quick and easy folding. The frame is aluminum and the belt-drive is Kevlar, which requires no grease. So the bike, and your hands, stay clean. It can be folded in seconds, according to the PR guys.
Reise and Miller have launched the Birdy, another light, practical folding bicycle. With a final size of 79x59x36 cm and 10.4kg weight, it is a bit bigger than the Frog but just as light. Prices between 850 and 1800.