Airbus (and many, many others) are being threatened by UK policy. They would rather stay. They aren't the bullies here.
Your car issue is all arse-about-face. If we import most of our cars, then hindering that process won't help. We obviously can't make enough to go around and if Nissan and all the others leave because the supply chains are screwed then we will be even worse position.
Please, please, please stop repeating (or alluding to) the myth that they need us more than we need them.
It just isn't true, which is why their negotiating hand is far stronger than ours, and why they have not changed their published position since the referendum. We aren't being bullied, they are just maintaining the established rules of the club which we have decided to leave.
We're desperate for a transition deal so we don't go bankrupt, they don't want to be mildly inconvenienced. Our exports to the EU account for 13% of our economy but their exports to us account for just 3%.
So, of course, the European governments and German car manufacturers would be sad to see us go and will miss our contribution to the budget. But they won't jeopardise the fantastic arrangements that the union represents to allow for us having all the benefits and paying none of the costs.
Added to which, the exports from here are largely from companies that are likely to relocate after Brexit because conditions won't be so favourable here. So that 3% will diminish, as will our profit from exports.
Thankfully most of the government have now gone beyond the cake-and-eat-it phase of fantasy, but some still wont accept it...
We mustn't leave the single market or CU. If we do, we need to replace it with a construct that does the same job. Fortunately the country has ALWAYS been of that opinion - even leave voters, who were promised the Norway option before voting and continued to expect it immediately afterwards. All this hard brexit nonsense is a massive and unjustifiable over-reach by extremists.
2016 poll showing Norway option favourable by two-to-one.
https://www.telegraph.co.uk/business/2016/06/11/uk-voters-back-norway-style-brexit-poll-reveals/