[adlpz]

It used to be an useless time to commute by car to home (and I used to take the train) and the weather thing. Until I went on vacation to Germany and it started popping places to see, German translating widgets and other goodness. Not that useful still, but I believe it can grow into something really useful and quick.

[pspeter3]

You can change the commute mode from driving to public transportation

[eli]

I'd imagine that works great in SF. The realtime public transit data Google has access to varies greatly city to city.

[adlpz]

As it's been said before, that works just on some locations. For the vast majority of the world (like in, geographically), Google Now is not that accurate or useful.