I have now removed all the smaller roads and I only have the two roads that I started the route with. That was over a year ago and the Carz have always been on the route. I have tried every thing I can think of and destroyed a lot of scenery and roads. My Great grand children love the cars more than the trains. I checked on or tried all the answer that I have received and nothing has worked. Does anyone know why they stopped and how to get them started again. DEisan