I agree with you that they should be much more explicit about this autopilot stuff and the name autopilot is very misleading. The other thing they say on their website (https://www.tesla.com/AUTOPILOT?redirect=no) is this longish quote: "Please note that Self-Driving functionality is dependent upon extensive software validation and regulatory approval, which may vary widely by jurisdiction. It is not possible to know exactly when each element of the functionality described above will be available". But I can imagine you are just in the car and you don't have immediate access to that. A normal car's cruise control doesn't steer on most cars, and people don't expect it to. Because of all the hype around teslas its not surprising that you could think it could do all that stuff. But it's not trivial to turn on the autopilot, did you get that from the person who gave you the car? I think they could have explained it.

I'm happy that you were not hurt nor was anyone else. Tesla could be more explicit about this.

I guess it's another thing that you learn from experience, and they do talk about it but it's not obvious but when the car is more full, they charge the batteries at a slower rate, they can only charge them at a rate based on how close they are to full. I know that's confusing, that's just how they work. If you use the trip planner in the car, it will route you through the super chargers and tell you how long to stay at each one and what the likely % of charge will be. I traveled from Seattle to Banff and the superchargers have been placed at a good distance apart so that I never need to charge more than about 75%.

I hope if you ever try another EV that the people renting it to you provide proper instructions so that you can drive it safely.