A new raft of plans to get 100,000 cars off the roads in the next five years contains one amazing, only-in-L.A. proposal: adding almost 10,000 cars. A new report from the nonprofit Shared-Use Mobility Center envisions, among many other sensible ideas, adding 8,400 cars to the city’s car-share programs. The report, which says that L.A. is “becoming one of the leading centers of transportation innovation in the U.S.,” and that it is also “a testing…