I guess we could elect Boris again maybe?
<runs>
I can only find pictures of Boris walking to London mayoral declarations. Did he ever cycle to one?
He was fine (not great - fine) as a city mayor for cycling. He took some of that with him to national level (both the current design manual and the start of Active Travel England came during his administration, and his London Commissioner Andrew Gilligan became an adviser to the UK government) but overall I think it's a shame Boris didn't finish at city level, with starting really cleaning up London being his main legacy.