At least you have the lawfull possibility to install a tow hitch. If Tesla doesn't do the proper paperwork for EU homologation, no one in Europe can drive a model 3 with a tow-hitch. It will be illegal
I hate to be the negative one here as I'm usually all for innovative ideas like this... but this is a problem in the United States also.
The OP has stated repeatedly: "Don't try this at home" as I suspect he is aware of the issues associated with towing a trailer with a vehicle that isn't rated for it.
This issue comes up all the time on the truck forums I visit (I tow a lot of different things) and people are constantly asking if they can pull more than what their vehicle is rated for. The answer is that there are not definitive laws against it, but you are knowingly engaging in reckless behavior. The fine print in your insurance documents will mention this if you look close enough. They won't cover anything that happens to your car or trailer if you are overweight. For the Model 3 that includes any number greater than 0.
Here's the worst part... if you ever get in any accident the first thing after ensuring everyone is safe/alive the police will do is pull up the tow rating on your vehicle. If it comes back lower than what you're pulling, you will likely be at fault for the accident. Since the Model 3 will come back with "zero" they will write you a ticket and the other party involved could sue you. So again, try this at your own risk.
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