Yes, Henry Ford did it in the 1950's to recoup the losses after the Allies bombed his tank making factories in Nazi Germany and Axis controlled territory.
There are certain laws in place to keep people from willy-nilly suing the government, but there are situations where it is possible to sue them and sometimes even win. (not sure about this case in particular, anyone want to weigh in?)
Do you have any source for this trial? I can't seem to find any trace of it when googling. Also Henry Ford died in 1947 and had cerebral issues before that, so if the trial did happen in the 50s it was either brought by his successors or Ford Motor Company.
There are certain laws in place to keep people from willy-nilly suing the government, but there are situations where it is possible to sue them and sometimes even win. (not sure about this case in particular, anyone want to weigh in?)