Thanks for that inputTrackpack11, these GT500's are built and designed and engineered to handle a LOT of hard racing and driving right from the factory. Aside from a few transmission issues that have been reported in this community, the GT500 is a beast and it will be hard to do any damage to the vehicle while pushing it's limits at a track much less cruising around on your local streets. You would really have to do something way out of the ordinary to hurt anything. I understand wanting to be cautious about breaking in the engine with care and that is a good solid plan to make sure you dont have any issues down the road when you really are putting the car through it's paces.
With all that being said, and to put some of it in perspective, when was the last time you bought a car and they send you a usb stick with videos on how to do burnouts and give tips when your car is at the drag strip? Enjoy the car my friend, it can handle it!! (Plus it's still under warranty!)