It's good....this one guy I met at a con one year did quite a bit better. I forget exactly what he modeled it after, but he could transform from robot to car and back again. There's an article with the steps he had to go through floatin around somewhere on the net.
comment #30881 Yeah, some guy designed a transforming Breakdown costume (Breakdown is a Decepticon, BTW) that went from robot to car and back. It looked really painful to transform, though.