I've got two excelent ideas for the sport category, that is, if I can find them. One involves the number "8" and indeed comes from Detroit, and the other is a pretty obvious choice from Western Europe.
The motorcycle is going to be tough, as I don't know much about them other than I like the expensive ones, ie BMWs, Moto Guzzis, and Ducatis.
I like the "Quickest SUV" category, as there are a lot of options there. However, Doug will likely get what I'm thinking of, so I have to try to find the mortal enemy from Detroit. However, that enemy I'm thinking of may apply to the "sport" category as well.
"Worst power to weight ratio?" That one may be a bit tougher than I think it is, but we'll see. I have a good idea for what I can do, but I'll have to run the numbers...