I've lived here my entire life and the DART trains were a great part of my childhood. That said, now that I know a few things, that network would be a pretty fun thing to drive on. Kinki Sharyo stock that's modified for use by DART, 93 miles of track across 4 light rail lines and 3 commuter lines. The scenery varies wildly from the literal center of downtown Dallas running at street level 20 feet from a skyscraper, an underground station, and several elevated ones with speeds approaching 70mph.