[dmurray]

Would you get significantly different results? I'd expect this would work OK even if you assumed travel in a completely straight line - unless you're tacking like a sailboat, you're going to spend most of your time travelling close to the overall direction of travel.

[gunalx]

At least i do. Tried my regular commute, but it has a bridge witch is dedicated for buses and emergency cars. So would be a nice addition, but the added complexity of using something like travel api in google maps, witch would cost more. Really liked the idea, and usually seems to work ok.