In the US, you're "supposed to" drive in the right or middle lanes, using the leftmost lane only to pass. Here's a map of the state laws as of 2010. (It's only necessary on highways and state routes, I think?) http://jalopnik.com/5501615/left-lane-passing-laws-a-state-b...
However, it's not a hard and fast rule, and a lot of people don't follow it. So I have to deal with morons who drive 5mph below the speed limit, in the left lane, on state routes. Every single day. As I drive up and down a decently large hill.
RE: Wrong lane: that Tesla driveway would be confusing to even a human driver. It's definitely not a regular road, so the car didn't understand it.
However, it's not a hard and fast rule, and a lot of people don't follow it. So I have to deal with morons who drive 5mph below the speed limit, in the left lane, on state routes. Every single day. As I drive up and down a decently large hill.
RE: Wrong lane: that Tesla driveway would be confusing to even a human driver. It's definitely not a regular road, so the car didn't understand it.