Hi Erik

Nice target.I would say 2500 km to have a try with it.

I suffered from more charges than I ever wished. Worst, 2 were triggered by the PH (the late Issa).
I observed only 2 real charges and was content to ride in the car.
I estimate 20-30 km/h (14-20mph) a false charge.
A real charge is slower than a Toy or a Land Rover in
2nd gear : say under 50 km/h (< 35mph).

I recommend you search more seriously because you might try it for real in a couple of weeks.