> That the German Court felt pressured by the Auto Lobby to take this decision?
Probably that + the constituents. When a very large chunk of your constituents are employed by local car manufacturing companies, letting those companies fail and lose to a foreign competitor not only loses money for those companies, it also puts a threat of unemployment on your voting population.
Lobbying from local car companies + your voting population's employment dependent on success of those local car companies is a very strong combination.
EDIT: to clarify, I am aware that judges in Germany are not elected, I wasn't implying that judges would support the ban just get re-elected. I meant it to say that the judge could see it not only as some lobbying effort, but also as a move to protect interests of the working people they are serving.