h/t Tundra Tabloids
it is almost certainly a gas explosion from a bakery at opening time at the 9th district behind the opera.
— Deutsch365 (@deutsch365) January 12, 2019
The car blown over and the windows blown out seem to indicate the blast came from inside the bakery at around opening time and knocked over the car. Had thier been a bomb in the car, the roof would have not been attached I would suspect, to the rest of the car, and it would look blown out, not crunched in from the direction of the windows.
But expert opinion is needed. I just don’t think this is a terrorist attack.