Here is a custom batcycle I made for an upcoming movie. It is based on the Batcycle in the movie the Dark Knight. Designing things in LEGO bricks is always a challenge when you are trying to have it be on scale with a LEGO minifigure. I tried to make the design as small as possible while still making the bike look large and intimidating. I think the final project turned out amazingly and you can see the film here: http://www.youtube.com/watch?v=oMAWjNVsGp8