He is only crossing yellows when there is visibility but still I would only cross half the car not the 4 wheels. I don't like his technique for grabbing the wheel though.
Don't be scared of invading the other lane with your left tires on the open (not blind) corners. It is actually safer since you have more run off space and better entry line for comming right handers. You can also brake much later for some of the turns but you might want to be really confident on...
I know Porsches are not easy to drive but come on! easy on the gas! The shots and sound are great though