It's a wind-up, or perhaps not
The new cablecar across the Thames is a curious thing, basically the cheapest way Boris could look as if he was doing something new and shiny whilst hoping people didn't realise it wasn't very useful (rather similar to the mayoralty, wouldn't you say?). Most travellers these days are tourists and it looks like a good ride. I will try it one day, but on this day they weren't running "because of the wind". Hah, someday, whoever set that criteria ought to go skiing if they wanted to see whether they work in the wind. Still, I suppose the passengers might have felt unsafe.