Tatra makes military jeeps, aircraft and few other items. Although they announced plans to make a new air-cooled engine that meets euro-enivro standards.
If you believe Wiki, that is.
Tatra's in the 30's were luxury cars. Huge room, leather interior, quiet engine. Jay Leno has one and did a spot on it. (totally awesome link above from OP)
I think it took a great long while before the whole Aero thing caught on in the US. And it's still not completely caught on. I mean, They sell the Honda Element in the US but not Europe. And that thing looks like it's made from Lego's.
And I'm sure Tatra as a company, decided that Aerodynamics are important. Other companies put less emphasis on it. I would leave, Focus groups, unionized labor, committees and such for a discussion on economics, which is beyond the scope of this thread. I'll be happy to discuss in OFF TOPIC.