On a freeway it’s only kind of usable. It switches lanes far too aggressively and for no reason, to the point that it makes the ride uncomfortable.
What I really want is auto steer with lane switching when I signal, which for some reason I could never get working in any mode. It either doesn’t change lanes at all, or changes them arbitrarily of its own volition. And if I change lanes manually it turns off autosteer, which is too irritating to use in practice.
Tesla self driving, in any mode, is a bad product. And I say this as a Tesla fan.
FSD is amazing. Any notion it takes more effort to use it than driving is made up.