Cabrinha

Hi all, just bought the air GT challenge for my childr for Christmas but obviously had to have a practice run with it!! i Went into the car settings to find out how to reduce the power which I managed to do. 25 percent was perfect. the problem I had was I put a car on the inside lane slot and did the same reduction and it crawled along at a snails pace. can anyway one help before the big ho ho ho ps great to get back into it after 40 years!