A few observations from trying it out in my car.
- I installed the update in my garage and was surprised that it was working and showing "14 inches" and a rough outline of the boxes in front of my car right away. I thought it would only be able to estimate distances when the car was moving, but apparently it can even estimate from a static video feed.
- I parallel parked my Model 3 on the street in front of my house with nothing in front of it, and then I parallel parked my other car very close in front of my Model 3 (measured 12 inches with a tape measure at the closest spot). When I got back in the 3 and put it in drive, it immediately showed the outline of the car in front and “13 inches”. Someone on Reddit had speculated that it wouldn't work if you parallel parked and someone later parked in front of you. Not sure how it works, but it does. Maybe it just calculates the distance to the lowest spot it can see, which should be fine for the parallel parking case.
- The lines it draws in front of and behind the car seem to be 12 inches from the actual objects the car sees, so I guess they are meant to show where you need to stop, not where the objects are. When you touch those lines, that's when it switches from saying "12 inches" to "STOP". The lines on the sides seem like they don't have the 12 inch buffer, though, and I think it's just putting the lines on the side exactly where the objects or curbs are.
- The lines on the sides aren't quite precise enough to park super close to a curb (like 3 inches). That's not so bad. The 360 cam on my Mazda has the same limitation, but in that case it's because the camera and / or screen aren't high enough resolution to see when I'm getting super close to the curb. I still think the repeater cameras are best if you want to park really close to a curb, and the vision park assist was beeping at me and telling me to stop when I parked at about 3 inches from the curb.
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