Dave Barth, Product Manager for Google Maps back in 2009:

It takes almost zero effort on your part — just turn on Google Maps for mobile before starting your car — and the more people that participate, the better the resulting traffic reports get for everybody.

That is significantly more than zero effort — especially for your battery life. I imagine this is what Apple wants to make better, making it so that users don’t have to take any additional steps by providing historical analysis instead of real-time crowdsourcing of the data.