Btw I thought mine was just a fluke so I didn't mention it, bit I did have to file the bit drive hole out just a little for the bits to actually fit.
Turns out they're all like this, but regardless you'll want a slightly longer bit with a detent or it'll just go all the way through.
Another thing I just noticed is that you should he able to store a bit in each of the side tray areas , and the main " cab " of the car should fit 2 regular length bits in a row for a total of 4 bits.