Reset all time members of vehicle:

- Reset (nullify) all times
   when a new route is set.

   Fixes a bug where there is a trip
   time when in second day and still
   has not arrived.

src/Vehicle.java

@@ -115,6 +115,9 @@ public abstract class Vehicle {
         this.route = route;
         this.arrivedToDest = false;
         this.routeTimeHistory.clear();
+        this.timeStartedOnCurrentStreet = null;
+        this.timeStartedMoving = null;
+        this.timeOfArrival = null;
     }
 
     private void setVehicleSize(double vehicleSize) {