Asked last week by Caroline Pidgeon AM how many people had taken part in his Cycle Friday initiative, Boris Johnson replied:
"I am pleased to confirm that well over four hundred cyclists registered for the Cycle Friday events that ran towards the end of the Summer of Cycling."
Four hundred sounds pretty poor for a London-wide "summer of cycling" to me. So how did you work out that total Boris?
But hang on, doesn't that assume that a completely different set of people turned up each week? If they didn't then Boris has double counted them no?
Surely the real number who took part could be as little as 93.
And with the total cost of the scheme thought to be £30,000, that works out as the most expensive commute it's possible to make.
Wouldn't it have been cheaper to just hand out a few hundred free bikes?
You can listen to Boris's Transport adviser Kulveer Ranger debate the scheme with Nick Ferrari and Caroline Pidgeon in the above clip: