I can't think of a better forum to put this in, so here goes:
I'm thinking of a car. It's your guys' job to figure out what it is, and you may ask only questions which can be responded to with a yes or no answer. Judging from when I've played this game with friends, the best way to do it seems to be by the very most general comments, like country of origin and type of car, etc. If you can't answer it in 20 questions, that's okay, but the name of the game is still "20 Questions"
Anyway, go for it! I'm looking forward to this game! Try to go one question at a time...