Hmmm...it doesn't look like it would serve either of its purposes well. It will be too big, awkward, and heavy to ride well as a motorcycle. And the design puts the fender right where I would want to be standing if I was doing the smoking.
Your meat will definitely get smoky, though, with the chimney going down before making an upturn, the smoke will back up in the pit.
I think I will stick to my smoker in the yard. It works better and cost me a WHOLE lot less.