Online maps for cyclists and pedestrians

Here's a nice simple idea for any company that does online route-finding - create a version that finds routes optimised for cyclists or pedestrians.
I realise this will complicate your routing algorithms that seem to be 'head for the nearest freeway as soon as possible', but cyclists and pedestrians have different needs:

• Prefer roads with cycle paths and pavements (sidewalks)


• Take steepness into consideration as well as distance (this one is specially true for San Francisco


• Allow for short-cuts through alleys and going the wrong way up one-way streets


• Show contour lines or gradient markers


• For extra credit, link in public transport timetables - especially ones that carry bikes

Go on Jeremy, see if Yahoo maps can do this for us.