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

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-by-state-map 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.