Where I live, I'll occasionally see a Police Interceptor that has been retired from the police department, then bought by a taxi company, driven for a few years

Where I live, I'll occasionally see a Police Interceptor that has been retired from the police department, then bought by a taxi company, driven for a few years, and then sold to a private owner. I can't imagine buying a used car with 500K miles on it, but people do it.