If you find yourself late (due to flights being delayed) at Paris, Charles de Gaul and decide it seems like a good idea to use one of the taxi bikes do not say to them "It's alright, I ride bikes all the time. You won't scare me so go as fast as you can, I'm in a hurry". If you do they'll manage to carve through the snarled up traffic on the Peripherique in next to no time; including spells at 140km/h on the hard shoulder (well, what passes for one- looked more like a gutter...) and filtering through quasi static traffic at 80-100km/h. I was particularly impressed by how well a goldwing filters- its mirrors are a little higher than most cars so it passes through gaps nicely. What I wasn't impressed by was the heated seat; no warning so I wondered if my bladder or bowels had let go. All in all though, recommended. 40km in 32minutes through hideous traffic; 70 euros (plus generous tip.)