Intercity Lines, Reliable Auto Transport, and JP Logistics are the most consistently recommended in the MANY threads that already exist on this subject and that would have turned up had you Googled "auto shipping site:m3post.com" or similar.
And yes, JP Logistics handled shipping for the most recent Gold Rush Rally on the leg of the trip that the participants took by plane. I watched them unload Aventadors, Veyrons, etc.