Shipping a non running car

The only advice I have is to be very careful. Brokers are lying, backstabbing, criminal thieves. TRY not to go through one, but contact a shipper directly, or find someone through a friend.
I agree 100% it has happened to me, Almost all of these companies broker trucks though so its hard to avoid, when I use Montway I tell them I want a company owned truck not a broker and I am very specific and blunt about it. They haven't let me down yet, I might pay more but I hate third party deals because it takes some accountability away.