ok at that speed you really dont want to see wind, i dont dought the little buggers will do it happily, however it is an inanimate object and would happily jump off a cliff if so steered and inclined. that bieng said i will take my turbo pocket bike to 50+mph at just over 27INches from the ground to the top of my helment and people say I am crazy, if you dont know what a pocket bike is search it on google from asphault to top of tire is 12 inches. so fast so fun, and its only 49 cc wait tell i get the minni 110cc motor and it has a 3speed tranny.... ok so maby i am a little crazy but definatly adicted to speed.
and I dont like driveing the kick at 60 with a decent wind it will blow you acrost the road. however i have had it up to 90 to agree that steering is vague at the most.