Before you read any further have a look at this blog from a while ago about Minatur Wunderland – the worlds larges HO layout. Now have a look at this blog about the automated road system you saw in first two vids,
A recent visitor told me that the The City Edge Layout Model Railroad created and built by Vic Smith also has automated vehicular traffic. The layout is located near Lambert International Airport in Bridgeton, Mo, a suburb of St. Louis. Featuring street running and Kato’s Amtrak night running scenes along with Broadway’s Union Pacific AC6000’s transporting Athearn and Intermountain double stack units across the city’s elevated rail structure by Micro Engineering. Along with a nostalgic trip of Broadway Limited Santa Fe’s War Bonnet F7’s pulling a set of lighted California Zephyr cars while a trio of NW2 switcher engines carefully perform some street running down Market Street. This layout runs a variety of trains and rolling stock from many different eras for a wide range of entertainment for layout visitors. This 10 minute vid shows you the layout:
This vid shows the automated street traffic.
Amazing stuff what!