Really? I think UPS is just fine... they know where my condo is better than Google Maps, and they walk up to the door and put it on the porch and ring the bell.

Actually, it might be through self driving cars. Probably come with a regular human, though. See: http://m.digitaltrends.com/lifestyle/google-plans-to-use-sel...

Sir, that is fucking awesome! But why the human ? A Nao (http://www.youtube.com/watch?v=2STTNYNF4lk ) would do. I would bark at Siri for toilet paper, the self driving google car would arrive within minutes with toilet paper, a Nao would walk in through the door, I'd drop my pants, he'd wipe my butt with my newly purchased toilet paper & I'd tip him handsomely and he'd be driving off to the next customer's anus.

Because, first of all, insurance and state law requires an licensed driver to be present.

And second, the human has to deal with the exceptions -- cases where the data is wrong, etc.