During the 1st hour of running this car, It flew off the table at brakeneck speed onto the cement floor 4 feet below...OUCH!!!! There goes the rear spoiler and the mirror, spoiler broke in half and I never found the mirror. Since then the track is completely closed in so that will never happen again. I have now made a new spoiler out of lightweight plastic and a rear diffuser. Slot cars are very addicting.