hi guys !! this lot is awesome !!! really !! only one thing !! it doesn't really work for me !! i did exactly what u described !! one entrance and one exit and between them a subway connection !! but still it doesn't work !! what's wrong ? can someone describe me how YOU did it to make it work in ur city ?? PLEASE PLEASE !! i'm going crazy !! thank u !! and one more question , why is everybody keeps talking about left hand drive ?? is there really a problem !! is this the reason that blocks cars from using the tunnel (by that i mean going really through it like the real tunnels that sim city 4 provided with mountains) ?? thank y for answering !!!