Well, this is new: our first crossover with another podcast. Exciting times. The podcast in question is Talking Headways which, in its own words, "explores the intersection of transportation, urban planning and city living". It’s hosted by Jeff Wood, who also runs the San Francisco-based transport consultancy the Overhead Wire, also produces the Direct Transfer daily newsletter. The plan is that we'll do two of these crossovers. This week, I'm asking Jeff some big questions about transport in the US: why some cities have it, why most don't, and whether that's likely to change. At some future date, if all goes to plan, we'll swap roles, and Jeff will interview me about the situation here in the UK. (Both episodes will be available in a slightly different version on the Talking Headways too.) Skylines is the podcast from the New Statesman's cities site, CityMetric. It's hosted by Jonn Elledge.