For instance, I can drive the 3.5 miles from work to home in 8 minutes. On foot, the route is quite different but the distance is that same. Google thinks it would take 1 hour, 11 minutes (obviously, they don't take into account any ice cream stores en route).
By bus, they tell me it will take 58 minutes — and cost $1.75. They also tell me it would be $2.05 to drive. Again, no ice cream is factored in.
Nicely done. Though it's in beta, the walking route matches what I would choose.
I love the fact that Google keeps improving their systems. By the way, if you didn't know — one of the coolest features of Google maps is that you can click and drag to change a route. If their directions send you up 101 but you prefer to take 280, drag the route line over to 280 and a new route will be drawn, using the points you request.