Offtopic as hell but...
Dont want to start a argument but when some one copy you its the biggest sign some one really like your work.
And for god's sake if you dont want people to build a car that's like yours then way show it for the public at all?
Sure sucks to build things that some one else copy and they havnt done half the work that you put in to it. But thats LIFE and its a free world. Have happend to me and its going to happen again to other people.
And of course he can drive fast on public roads? We all brake the law now and then and i dont see that its impossible for him to drive fast on public road to try out his car. But i have to agree that it doesnt sound probable that he need the spoiler for down force
Well that's my thoughts and i dont think you should care what i think!
I took my chill pill after i wrote this so please dont care :P