Plus it's much more of a challenge to take corners at speed than it is when you're being sensible. Powerslides all the way. They want to know if you're capable of handling yourself in emergency situations too, so if you're lucky to get an ambulance coming up behind you it's good to floor it and try clear a path for the ambulance by weaving in and out of traffic at speed while blaring on the horn and radio fullball. Avoiding accidents, and cops, gives you points. And it's not necessary to keep all four wheels on the ground at all times.
It's all about confidence. If the instructor sees you're relaxed and confident while driving with your arm out the window and feet on the dashboard he'll be impressed. And if it's a she, you might even pick up.
Plus if you see a Kill Frenzy on the side of the road, don't hesitate to pick it up.