The number of Lyft, Sidecar and UberX vehicles may soon be vastly reduced in Seattle if the city’s proposed regulations are approved, and some members of the tech community aren’t too thrilled about it. The Seattle’s City Council Committee for Taxi, For-hire, and Limousine Regulations is set to vote on an ordinance on Friday that would cap the number of Lyft, Sidecar and UberX drivers at 300, regulations that those companies say would effectively shut down their businesses.