extremely high miles on my retired 04 crown

I somehow can not believe the mileage on my p71, every one tells me it is good maintenance, but it had 296,xxx on it now and was retired from service at about three years old. It was a transport car if that makes a difference, i know alot of rode miles. And the paint is peeling bad off of the whole top of the car. when i power wash it last summer it looked like the car had bad dandruff, came off in big flakes. the car is in beautiful shape and runs wonderful, has a few quirks but lots of power, and between oil changes the oil still looks clean. doesnt smoke at all and the tranny is good.