And this:
is why that is a stupid idea...
(See for yourself: do a Google Image search for "SWAT armored car")
There are ways, quite easy ways, to deny them access to your real front door (and therefore the winch/cable technique of ripping doors off. And unless they deploy a tracked vehicle (rare), you can make it so they can’t easily punch a hole with a truck either.
Why God gave us IEDs, sabots, tungsten, and tungsten carbide.