@tripletschiee:
2) Yes, forgot to mention it but I didn't mind because it's just an error in the instructions, not the model itself.
4) I believe so. As I mentioned earlier, it's really really really hard to steer it in place. All of the axles bend so much it's a pain to do it.
5) I was thinking about that too. The pistons really do move too slowly.
6) I thought it had something to do with how easily a child could press those parts together but it didn't make sense.
7) Wow! I totally missed that!