They are beautiful cars and have really cool front wheels that steer but they are absolute dogs on the track. They weigh too much, the tollerances are poor and the motor is weak. If you wanted to put some time and money into one they could be make to run better but I don’t know if they would ever be able to win a series. Having said that, they are super cool looking with lots of attention to detail on the body. They are worth buying just for the looks.
The cars are “fast” in a scale sense but will not stay with any Slot it car. Having said that, you can always spend a fair amount of time and money and get this car to work well. With the heavier chassis it shold not require any weight. New motor and blueprinting everything else and it should run very well.