I made a small AP1 vs AP2 test on familiar local roads, where I drive every day. Both cars had the latest firmware ( 17.26.76). AP1 car was my own, two years old 85D, AP2 was only 600km driven Model S 75D from Tesla. As I wrote in the beginning, I only tested local roads (i've read, that on highway AP2 is on par with AP1). Right in the beginning AP2 made very strong, almost ABS activating ghost braking for no apparent reason. AP2 was also worse than AP1 in the following cases; - it made many small corrective movements where AP1 drove rock solid -AP2 drives too close to the middle line -AP2 made one sudden jerk towards middle line and I had to take over -when exiting from tigh corner (AP2 was following a car) AP2 continued the turn too long, I had to take over In one case AP2 was better, it is in a place where AP1 every time (no learning here ) drives wrong, because the only line marking disappears.