You can't compare Ford with Hennesey. One is an international organization that employs tens of thousands of people at any given time, and probably is involved indirectly in the employment of millions of people if you consider all of their subcontractors, suppliers, etc.
You can change thousands of employees every year at Ford, and have good or bad experiences based on very random experiences from different people (depending on which call center you get routed through).
Hennesey developed many bad relationships in the past and still hasn't got rid of the trouble employee (himself). Until there are some serious public apologies or a change in ownership, the onus is on the company to make changes and prove customer service has improved, not the customer.