Missing pieces; "low clearance"
The package arrived in good condition and earlier than expected, but four pieces were discovered as missing when the coaster was being assembled. Like any good "engineer," my son was able to still assemble the coaster and get it working despite the setback, it is a frustrating setback for the money spent. Also, when built, according to the directions, the car is unable to clear the underpass when a mini-figure is sitting in the car. Pieces that "raised" the seat had to be removed in order to provide the clearance necessary for smooth operation.