Verified answer

yes they can

Yes, like any other engine. They actually suffer more premature wear and tear due to excessive idling than high RPM. It's harder to manage the fuel ratio when a vehicle idles. The O2 sensor cools off and they need an exhaust temp of at least 600+ degrees to function accurately.

Everything for the last 18-20 years or so has a rev limiter built into the Engine management system that keep them from over speeding.

I remember a day when engines of a particular family had a "Police & Taxi" or an "Interceptor" version that had significant upgrades for severe Service and / or performance. Different compression ratios, pistons, rods, HD cooling, etc. You just don't see that kind of thing anymore.

They can but tend not to. Because they are cop cars, they have to be maintained a lot, so they tend not to have too many problems. But it is possible that a problem could form while out on patrol that caused the engine coolant to leak out and thus cause the engine to overheat and blow up. Though this is unlikely it is still possible because they are just like normal cars, just maintained better.

Yes

Theoretically yes. But I have never seen it happen since they are maintained at a high rate

yeah they break down,most cop cars have tranny and oil coolers that makes them more heavy duty but all machines have a breaking point