The answer is everywhere, and your skill with them is a very important factor. It's interesting to see that, except a few, all the other 
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brands are imaginary, but they still resemble some real life models. Due to the fact that you are a racer most of the time, you have to know that the cars react differently, not to mention the motorcycles. After you get used to the control system - it's time for fun!
Our hero uses the car for something more than the ordinary transportation method. In his hands, it's a deadly weapon - he just needs some well coordinated moves and he can get another car off the road easily. He can also drift, 180s, side smash and others. If you want to learn to do them correctly, you will have to follow the small guiding text that explain what and when to press. Mylo also have something like a special meter seen in other games. You fill it as you drive fast without touching other cars or hitting people. Once you fill it, he gets boosts equal to a nitrous and does maneuvers that he wouldn't be able to do otherwise.
The coolest move is probably the Air Jack - our hero opens the car's door, ready to jump, and when the conditions are met - he jumps to the car in front getting the driver out and taking over its control. Very useful and frequently used in chases, car stealing or car changing. I often do it just for the fun of it.