It's not even just car yards though!!
The import yards wind them back in japan, or replace the dash cluster completely so they can sell the car quicker.
I was under the impression that pretty much every import had their km's tampered with. The story didn't come as news to me. I am definitely not a fan of dodgy car salesmen, but trust me, he's definitely not the only one doing this! If you buy an import, you run this risk, no matter who or where it's from.