According to the Financial Times, the 'trip from Heathrow's cargo terminal to a helipad on the Isle of Dogs will take 20 minutes in a helicopter, compared with the two hours a car takes to make the same journey, and a motorbike is even quicker' (sic).
Could be poor sub-editing, but if not, I'd love to see the on-bike footage of a public-road journey from Heathrow to the City in 19 minutes...