Clearly there's some kind of escalation going on. The new season has brought fresh thinking. And I can see the differences between the two great cities from cycle saddle level.
First observation. There's further to cycle. The Paris flat to the radio station is a 30 minute stroll past some of the great monumental wonders of the world.
The Streatham flat to the Guardian is a as yet untimed slog past some of the monumental wonders of the world.
The Paris ride does not necessitate any pit stops. The London one was a kind of noblesse oblige. I came to rest at the Portuguese cafe near MI5's headquarters just along from Vauxhall tube station.
I sat ought and watched the cars thunder by. It occurred to me that had I gone on a few minutes more I could have stopped off at the National Film Theatre cafe and looked at the riverboats swan past.
Well I will chalk that one up to experience. But the good thing at the Portuguese cafe is one mean cafe latte. I know that doesn't happen at the film theatre cafe.
But then you don't get arthouse films at the Portuguese pit stop.