BMW wants to sell more cars to greeks. Greeks don't have enough money so they can't buy. Deutsche Bank (DB) gives "free money" in loans. (And of course DB knows that greece isn't exactly "strong" economically.) We are talking about a greek population that never ever had a loan before, while the prime minister talks about the "powerful (economically) greece". They also thought that the world "stock markedt" was some kind of chinese recipe. Greeks, with "free money", buy BMWs. BMW is happy. Profits. Eventually, of course, TSHTF.
And then, would you expect that?
THE PRIVATE DEBTS BECOME PUBLIC.
That means the bad loans of DB become the burden of all the taxpayers of europe. Germans pay, greeks pay (decimated basically, with ~-20+% GDP, +5x taxation, etc), italians pay, french pay, etc. The TAXPAYERS.
To put it simply:
BWM: Happy. DB: Happy. Europe's taxpayers: F*cked.
The billions that greece "got" as "help", it never saw. They went ~98% back to foreign creditors.
Basically:
The politicians (cue, under the table payments for Mrs. Merkel, Mr. Schauble, Mr. who-was-PM-of-greece-then), took money from all european taxpayers, and gave profits to BMW and DB. (With their cut.) Now, they sell a nationalistic "those southern states are lazy".
PS: It was german and french private banks, and german and french industries. It's just that DB was the biggest, and BMW is big and symbolic.