Running in is a load of tosh , and the harder you run it the more free the engine runs " when I worked at ford dunton research centre, all cars got put on a dino and run at full revs for 36hours !!!
That was when the testing of the Toyota engines and then the jag ones , just need to check oil levels .
Also motor bikes get the same treatment but if you go to a dealer they say run them in .
But to be honest if your just getting a run of the mill normal car , and it's just for potting about in, who cares ??!'