With that pricepoint, maybe you don't need to implement actual autonomous driving, but instead it could be implemented by employing millions of dronepilots in some far away country that drive your car for you.
Driving along the freeway at 100mph and suddenly "sorry afk bro need to go to the toilet"
Human intelligence could be useful for navigating construction work.
Really, what we need is to overhaul road construction (and maybe roads in general) signage and protocols to make them machine-readable, not just human readable.