Shipping a car across country?

Yesterday, the hot shot guys showed up pretty close to one time, but they drove from Fl. to S E Tx here to pick up the 64 Savoy I sold. Nice new 1 T. Dodge Cummins with a paper D tag and a pretty new 20 ft. car trailer. Two young Cuban hybrids, maybe early 30s. They had a small ATV they turned side ways and had on back.
Straped it all down with straps about half the size most would use.