[racer]

Something to consider is the type of trailer being used and if there is a tray under cars on an upper deck. The tray prevents leaking engine oil, coolant etc from dripping down on your car from the one above. The larger private companies (Intercity, Reliable, Horseless Carriage) come to mind. I've used Intercity and was quite pleased. They kept me updated as the car was in transit and arrived on time.