Was cruising along in Autopilot 2.0 left lane on the highway slowly passing traffic in right lane, and noticed a Jeep closing in at ramming speed ( I was doing 75 mph), so turned on signal to get out of the way took control of the car, Jeep fell way behind so stayed in lane until I cleared another car on the right and then noticed Jeep gaining ramming momentum again but was able to successfully merge into right lane. Jeep drive overtook me on the left and then stuck his hand out to thank me for getting out of his way. Or so I thought until, he held up the finger. I'm old enough to not let road rage bother me so just shrugged it off. But the jeep driver kept his finger out for the next mile and then when he took his exit (long exit where the lane and exit travel side by side for some time) he made the come on follow me gesture and then stuck his whole arm up in the air with of course the extended finger. Kept it up until I finally just lost view. Perplexed as to what I did? Could it be that brake light on the Tesla turning on every time you ease off the accelerator (Regen mode)? Is it possible that my letting off the accelerator was inferred as me brake checking this fine upstanding gentleman Jeep driver?