The other thing that happens, also, is you'd probably find that if this vehicle is required to go to an emergency, there will have been a lot of emergency vehicles on their way there too. So there will be considerable sirens; there will be considerable lights. Now, there is American research that actually shows that when motorists are confronted with flashing lights, they will intuitively go towards the flashing light. So when you look in your rear-view mirror, or if you are approaching an intersection and you see flashing lights, what people intuitively do is actually go towards them. 