Curtain alterations

It would be very difficult indeed to rip it off in passing. However I stand well  away from the edge of the pavement and keep an eye out. Many bus stops don't have indicators of bus times, including the one outside the Post Office, which I use a lot. If I'm going somewhere which is only served by one of the buses from that stop, I don't like not knowing whether I will have to wait two minutes or twenty minutes, and I often forget to look before I leave the house.

Either the car was on blues or it wasn't, maybe OP can clarify? But I still don't get why it would be a good thing that the cyclist escaped from two police vans - they would have either arrested or protected him, depending on the scenario. 

That seems the more likely scenario, doesn't it? I suspect unwarranted assumptions have been made. What is the evidence that the car was a police car? What is the evidence that two police vans arrived later "to help give chase"? To "help"? If the car was not a police car, other interpretations of the situation are possible, as said above. It could be that the cyclist had done nothing wrong and was trying to get away from the pursuing car for completely other reasons. Who knows? It's very easy to jump to conclusions without knowing all the facts. 

Yeah, I'm confused now too.