Garbage Truck

I've always had a fascination with cars (motor vehicles for the cynical), I was lucky enough to pass by a garbage truck making slow work of several trash dumpsters. You can hear someone working with what sounds like a metal cutting saw, maybe an angle grinder, but I'm sticking with power saw. I love the combination of the different power sounds that we'd normally take

for granted as noise.
And yes I know it doesn't sound like a garbage truck, I've been told it doesn't many times. It's using its front arm braces to hoist a large dumpster over the top and dump it in the back. There wasn't much in the dumpster though.