I've been thinking about this problem a lot: In simple terms it's "If you had access to the levers of power, in relation to transport issues, what would you do?" BUT before you answer here's what makes it an interesting question:
Firstly - there aren't really 'levers' of power - 'levers' which can lead to direct change. What there actually are is a set of tools which provide weak influence.
Secondly - even if using these tools then if you act too strongly or clumsily in the interests of social change the effects can be the exact opposite of what you intend.
Don't believe me that there aren't powerful levers... look at equal pay. Equal pay for men and women is established securely, strongly, and clearly in law. I can't imagine how it could have been more securely, strongly and clearly established... but we're far from there yet.
Don't believe me about unintended consequences... just look at pretty much any political mission to change things...
So before anyone says "I'd ban driving in cities" - forget it. You couldn't do this. I'm not offering a magic wand. I'm offering the so called levers of power... So "I'd start a conversation about banning driving in cities" I'll allow!
If it helps, think of Boris' work in London to build a few high profile cycle routes. He seems to work at about the outer limits of what's possible in terms of change... he would appear to be relatively independently minded, and elected to be independently minded, and pro-cycling... and yet has (as far as I can tell) had to stick his neck out a very long way just to get a few routes put in place.
Genuinely really interested in people's thoughts on this. Not interested in views on Boris or the other issues, but specifically on the initial question - what would YOU do within these limits with the so-called levers of power...??
After all, we can't criticise if we don't have sensible ideas on this.