The STOCK TRUCK SERIES X 398 is designed to look like realistic automobile. The large cavity drilled in the bottom of the car removes a large portion of the weight from the middle of this pinewood derby car. This in turn enables you to move that weight to the rear of the car, which will make it go faster. Now you can have a realistic hot rod that is rear weighted as well.  Each car comes with precision drilled axle holes for 4 wheels on the track in an extended wheel base and holes pre-drilled holes for our lead wire or tungsten weights. For 3 wheels touching the track (fastest) we recomend the STOCK TRUCK SERIES X 399.  Wheels and axles are sold separately to give your car that winning edge!