Once you learn how to use it, Adaptive Cruise Control makes "dumb" cruise control seem useless.

Lane assist features I don't find nearly as useful. But I keep it on...again, there is a learning phase where you have to reprogram your brain a bit.

In fact, between my $4k Land Rover and my wife's $58k Jeep, adaptive cruise and ind spot monitoring are only things she has that I envy. Not worth $54k, of course, and there's actually features of my Landy I prefer to her Jeep.