Have you a video?
That's the next stage although i've ran into a few problems.....can't get the cars to exceed 65 mph with the use of portals or in driver.With 8 cars switching and sharing lanes it will take bit of time to set something up.I'm thinking of abandoning the portals and joining the track between the stadium splines and use the 8 cars with driver commands.......I struggle with this part of trainz.