In silvercan, most cars will have the same speed. Braking skills is very important to get an advantage... take inside line, dive deeper into the corner, then brake to overtake a car with a one-way or a person who does not brake.
Most can drive without brakes maybe because they are using "tire scrubbing" as the brake (i.e. tire turning angle is big). Or you can brake, slow down to the correct speed, and turn with minimal tire angle.
Just my thoughts.