Reading Sky Mall
Sky Mall is full of useful products, those which we ask "how could we live without?". To wit, from my most recent travels, the following transportation products were on offer: Carlashes (To bring the automobile anthropomorphic into the real world)

Street Strider (to combine exercise with travel, since we don't have anything which does that already) [This is not so terrible, I suppose for the kinesthetically challenged]

Skate sail (called by Gadling the worst SkyMall product ever)