> What if...? Why not present the user with the option before their trip begins so that you're not wasting a lot of fuel and so on? I can't see people being to

> What if...? Why not present the user with the option before their trip begins so that you're not wasting a lot of fuel and so on? I can't see people being too happy with you if you start routing their lives around your convenience. Advertising currently costs the end user very little - but there's certainly a transaction cost involved. If you start doing this to people, there'll be a significant incentive for them to disable the system in some way, or opt for a different one. "Our cars only take you where you want to go." Would be a pretty good advertising message. "Average 10% faster journey times from A to B. You're in control. Take back your life." Etc.