Yeh, topspeed impressed me the most. That was a really clean tire exchange (my one issue is that you should be able to see some of the engine, but you can't...)
actually, if the wheel is turned like that you usually wont be able to see parts of the motor. usually there are panels in the wheel well that cover it up. otherwise if there were not panels, a lot of excess brake dust, road dirt/gravel, etc., hitting the motor.
ill take a pic of my car sometime and show it to you. though i dunno if EVERY car is like that so guess u could be right.