You guys keep repeating that mantra. Is this really your last straw? Again, you sound like you think the EU is in the weaker bargaining position. Yes, the UK is a major importer of German cars. It's not the ONLY importer of German cars.
http://atlas.media.mit.edu/en/visual...how/8703/2014/
Look at it, please tell me... is this going to make German car industry shake in its foundations if the UK exports drop by a few percent? Honestly, tell me do you think aside from a bit annoyance, is that actually going to make the German Government buckle and give you all the dreams you currently imagine?
Pro tip for you: The UK sells 2 million cars yearly. China? 20 million cars yearly... that's where Germany is looking to. Not the UK. Germany really, really, really wants a good deal with China. We send delegations there every year, I'm guessing the US does the same. Once a major deal happens with China that goes beyond just factories, nobody in Germany will give two fucks about cars sold to the UK.