they should have cowcatchers, asshole drivers pay for any damages caused to the cowcatchers.

Even if you try to force the vehicle owner to pay, there’s no guarantee they will.

And they won't drive until they pay up, it's as simple as that.

And risk damaging the streetcar?

I imagine if a kampfwagen gets bumped by just about anything, the biggest hazard would be random stainless steel and plastic litter all over the street.

There's also a non-zero chance it will just go critical and set itself ablaze. XD