But then it is in Beta!!
Now consider these 2 cities. Detroit, Michigan and Windsor, Ontario which is across the Detroit River. The Drive time is 8 mins (2 miles). How about trying out the new feature in Google Maps “Walking Directions”. Google Maps “Walking Directions” to Windsor, Ontario from Detroit, MI will take you 1 day and 15 hours (120 miles). Click on the image below to see how this happens: (more on walking directions at Google LatLong Blog)