The rules say no motorcycles or trikes. Can a motorcycle-engine powered vehicle be entered?

Absolutely, as long as it meets the other definitions of a vehicle. Keep in mind that the Challenge rules require entries to be relatively complex so that each entrant has to explore a full range of tasks in designing, building and presenting their entry. More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.