This is some pretty risky naming. It makes me think, "Cause of death: thrown trying to ride a Ryno."

That would work if it were an energy drink - but this thing will be in traffic, which really is a major cause of death.

I mean it doesn't exactly say stability and easy of riding, does it? (Which are the main reasons that people who aren't being gimmicky don't choose unicycles over bicycles.)

With a name like this it would attract a suicidal/desperado crowd, which usually doesn't invest in its future long enough to have much money at any one time. (i.e. you can't target early adopters at a premium price with this naming/branding, which is usually the key to marketing something like this successfully and getting it adopted widely as you learn how to make it better and roll out on scale.)

I would change the name.