config: reduce car density to 5%

config.js

@@ -518,7 +518,7 @@ window.CONFIG = {
         spreadKm: 45,             // gaussian sigma around the motorway network
         spreadFloor: 0.30,        // share that far side roads keep
         speed: 1.0,               // flow speed multiplier
-        density: 0.33,            // vehicle density multiplier
+        density: 0.05,            // vehicle density multiplier
         brightness: 1.0,          // vehicle light intensity
         motorwayDensity: 0.95,    // share of the density budget on motorways/trunk
         sideDensity: 0.35,        // share of the density budget on primary/secondary/tertiary