Comment by justin66

> It's a price problem since you need to install a bazillion sensors, motors and other thingies which are basically used only for one purpose.

That's an overstatement. You need to install sensors, many of which you'd install anyway for the modern lane-keeping and crash avoidance features. The sensors are not ruinously expensive and economy of scale incentivizes an automaker that makes both cheap and expensive cars to get these features out to the low end very quickly. As Animats pointed out, you really want to order this stuff by the million, not the thousand.

I guess I wasn't arguing with the crux of what you're saying - having a feature is generally going to be more expensive than not having it. The overstatement was very strong, especially in terms of timeline for reducing the costs of this functionality.