Remember Segways, those nifty electric scooters that resemble “lawn mowers on steroids”? The San Jose Mercury News reports that a key piece of legislation that would allow them on California sidewalks faces a showdown today in the state’s assembly. And the outcome could make or break the transporter’s future in the nation’s most populace state. Who opposes the proposed five-year experiment? Advocates for senior citizens, the disabled and pedestrians, who say the bill would turn California sidewalks into raceways. In support? Segway, naturally. Silicon Valley venture capitalist John Doerr. And geeks from San Diego to Yuba City.