I disagree with the last comment here.
Power shifting is an excellent way to race, i do it about 67% of my races, and i kick some serious ass doing so. The drive thing is really
only for guys that don't know how high they can rev their engines, or if they don't have an RPM guage.
The power shifting saves a precious few seconds, and you can ride the gears high and when you pop them into the next the car kicks and you get another 10-15 mph in less then a second. Not to mention you pull
all the power out of the car you can when you shift that way.
The only thing to be carefull of is that you don't hit it hard in 1 or L as
if the car has a good torque to power ratio you'll just sit still and the tires will spin.
That's all from my experiences.