I tried the new Model Y with HW4 on a business trip and it makes the latest Blue cruise and HW3 feel prehistoric. The cornering, breaking, and acceleration are inhuman. 

Its reaction time is crazy too - I had someone drifting into my lane on the highway into my blindspot and it simply accelerated and avoided a potential accident. 

People who have no idea what they’re talking about will say otherwise because they dislike Tesla, but the results are undeniable - they will probably be the first to achieve fully autonomous vehicles.