A passenger? How about dozens if not hundreds? If you have to ask -- it's obvious you've never been to Maxton to partake of the bugs.
Well, they're not that bad, really, except for the fire ants that enjoy crawling into your leathers and helmet if you're forgetful enough to leave them on the grass. And there are some flying little gnats or something -- but it's not too bad, really. Clean your windscreen every few runs and that's about it. Except for that bird that Rich Yancy hit at 200+++ a couple of years back. I guess his shoulder hurt for months.
As for human passengers -- unh, mmm, no, nobody rides monkey at Maxton, nobody has ridden monkey, likely nobody will ride monkey in the foreseeable future.