The default global scenery is at the minimum of plausibility, alternatively there is the one made from simheaven here which is based on OSM data, it's always plausible, it means that you could find the buildings really present, but maybe with height-shape-color a little different, however it is much better than the default
Trains and cars often disappear or appear out of nowhere.
It's plausible that there are rails and roads as VFR references, but cars and trains should avoid looking at them