> This approach often may *not* give you the optimal route. However, given that it
> will only very rarely be significantly worse than the optimal one, it is
> definitely good enough.

Depends on your definition of "optimal". (E.g., total distance, verses 
estimated travel time, any tolls that have to be paid for certain 
routes, traffic volume, etc.)

Did anybody see the one where Google Maps gave a route from something 
like Bristol to Norfolk via Ireland? :-D

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