Yes, you're supposed to drive in the right lane when not passing - some localities are more strict about this than others. For example, here in Michigan, there's a fine for driving in the left lane and not passing anyone for...one mile? Two miles? I forget, it's never really used. And you're supposed to "FALL" into the First Available Legal Lane. But in practice, if the second lane is open, people will jump across the first lane for the second - just watch your rearview as you accelerate and make sure the oncoming car wasn't moving over for you.
This is more aggressive driving than I would have expected from an automatic algorithm, but perfectly matches my expectations for the driver of a luxury sport car like a BMW, Audi, or Mercedes - and probably a Tesla, or a compact car driven by a young driver. I would expect a minivan, hybrid, or small commercial vehicle to wait. And I would expect a bus, garbage truck, or semi truck to just pull out and force the oncoming car to merge into the left lane.
Also, it would be a safety risk, not a security risk.