Functions
Description
The WHACK! vehicle from the Lego Technic series is not really a Technic model, but rather a Racers one because it doesn’t have typical Technic functions. The only special feature – apart from the name - is the friction motor. However, on impact the engine jumps out of the car. It's also a pity that there are no real B-instructions - a B-model can only be built in combination with the model 42073. All in all, it gets three stars in the overall rating.