Two drivers were shot dead and third injured on roads in northeast Dallas and Garland during Monday’s evening rush hour. Police were investigating four incidents Monday after the first shooting was reported about 5:40 p.m. in Garland on LBJ Freeway near Plano Road. Police are working to establish whether three of the shootings in Dallas are related to a Garland shooting that was the first reported fatality. “For whatever reason, this person is upset with something or someone and he’s taking it out on innocent victims going down the road and that’s very scary,” said Dallas police Sgt. Gil Cerda....