Not sure if we can link outside websites but I'm goin' for it!
http://mototuneusa.com/break_in_secrets.htm
I have ALWAYS run in new engines hard. No oil consumption issues (even with some that are supposedly 'known' to use oil), no longevity issues, all my engines always made excellent power on a dyno when stock etc. Manufacturers break is a myth. Maybe they want your new car to use oil and have reduced engine life?