You've clearly never driven a telsa if you think a $17k Corolla has more advanced adaptive cruise control. I've driven my model S over 15,000 miles, with probably over 50% of that on autopilot (mainly interstates), and NEVER had an issue with the adaptive cruise control. Its absolutely flawless. (autopilot has its quirks, although its still an extremely useful feature, and the primary reason I bought a tesla)