297 Central Line Underground trains at full capacity at 1680 passengers per train - that's 8 carriages with a maximum capacity of 210 each - all the seats, plus an 'official allowance' of 4 people standing per square metre as I understand it (a quiet afternoon then). (Hansard )
6250 of London's newest double decker buses, with a maximum capacity of 80 each (and remember, you're always guaranteed a seat on your bike!)
If we all took to driving cars as single occupants instead - taking as an example Britain's most popular car the Ford Focus at 4.48 metres long - there would be a new 2240 kilometre long traffic jam on our great city's streets (or 1391 miles if you prefer)
42 folded Brompton bicycles in one standard parking space
Furthermore we've already touched on the issues that result from carbon-based vehicles such as emissions, noise pollution, and having to pay the congestion charge.
Helping to make London a more sustainable and grid-lock-free city? It's reason number 13 to love cycling in London!