Geoff, it's "might unexpectedly _throw_ the scooter _into_ reverse." That's "throw", a verb used in phrases like "to throw a ball", not "through", a preposition used in phrases like "drove through a tunnel." Moreover, use "into", one word when used as a preposition in phrases like "into reverse".

Also, Geoff, you need a "to" in "recall of its Segway Personal Transporters _to_ fix a software problem".

If your goal was to fish for comments by using appalling grammar, you're very clever. Otherwise, I hope you're embarrassed enough to do a better job next time. Please try to have some pride in your work, Geoff.