LIN TAYLOR  IN a world reeling from the impact of COVID-19, investing in public transport could create 4.6 million jobs by 2030 and cut transport emissions, mayors in some 100 cities said on Tuesday. A "green and just recovery" with investment in buses and trains, particularly electric vehicles, would also reduce car use and air pollution, and protect vulnerable residents, said C40, a network of cities pushing for climate action. "The road to recovery is paved with investments in our infrastructure," said C40's Cities Climate Leadership Group chairman and Los Angeles Mayor Eric Garcetti, in a statement. "Public transportation is…