How is parktronic works? Is it useful?

In my opinion the older acoustic ones are even more accurate at very close range while the radar based ones have a lot longer range. If you do have to park the car with any kind of object close to it, Parktronic turns out to be very useful.
On an MB you would get a separate visual indication for each corner and a warning sound at close range.
Parktronic was standard for my W221 but I have had it as an option on multiple cars for years and I would select it among one of the very first options I would consider for a new car.







