A pedestrianised Oxford St. could be a good thing, turning a congested thoroughfare into a genuine public space. On the other hand, bus routes which go through it would either be rerouted through adjacent streets (which are already quite busy) or chopped in two.
Meanwhile, Tory clown prince Boris Johnson has vowed that, should he be elected, he will allow motorbikes to use bus lanes, just as cyclists do. Finally the petrolheads have a candidate they can rely on, since Jeremy Clarkson (who proposed abolishing the congestion charge for cars but imposing a £500/day congestion charge on bicycles, on the grounds that they are a nuisance to decent motorists everywhere and the smug, politically-correct Guardian-reading vegan types who cycle are annoying) declined to run.
Alas, if Livingstone (who has done an OK job, when he's not being George Galloway Lite) doesn't get reelected, it looks like Johnson will get up, as the other candidates (Brian Paddick and Sian Berry) do not look like having a chance. And, if Johnson becomes Mayor of London, I wonder how long it'll take until the fun-loving buffoonery gives way to hardline tory policies.