Mr Khan said he would also focus on affordable
public transport and confirmed he had changed his mind on the issue
of a third runway at Heathrow Airport over air pollution fears, and would be campaigning against
expansion.
While waiting for the additional data, Newman and Kenworth speculate on factors they say blend together in causing peak car use - the aging
of cities (more people coming back from the suburbs to the inner cores and driving less), the growth
of public transport, many cities hitting a wall in
expansion after average commutes (by car or even train) get beyond one hour's time, and the rise in fuel prices.