Truthfully all car companies have received some type of government support. All the Toyota, Honda, BMW and Daimler (Mercedes) Benz factories were massively damaged from aerial bombing after WWII. Government support and guidance brought them from ashes to the powerhouses they are today.
The reason Ford, GM and Chrysler were so profitable and powerful in the 1950's through the 1970's was because of government-funding during WWII. They retooled and built new factories during the war, all with massive amounts of government money. After the war their brand new modern factories, built with government money, churned out cars for the consumer instead of war vehicles for the government.
If you want to support free enterprise, without government support for a industry that builds transportation vehicles...you might consider a bicycle.