A carbon bicycle wheels are designed to be very quick in spinning up. This enables faster acceleration during races. The lightness of the motor means that any force applied to bike pedals is quickly translated to the wheels, with minimal loss. This enables riders to make a powerful surge forward, especially when trying to overlap fellow competitors. Such a powerful effect may be overwhelming for someone who isn't used to this type of bicycle - it might feel a bit skittish. Therefore, you should ensure to have sufficient training using the bike before the actual race.