Probably a cow-asaki......

[Justdroppedin]

https://thumbs.gfycat.com/IcyFatalEmperorpenguin-size_restricted.gif

[steveOtoo]

A Kawasaki Big Horn.......

[Gates07]

you wonder what kind of relaxer the animal was given to be put on the back of a bike going down the road

[staticrider]

If he started it when a small calf he's probably used to it. Might even enjoy it like a dog with it's head out the window when driving.