if it isn't already clear by the fact you aren't allowed to modify your car, or drive old cars, germany doesn't give half a shit about people who love cars. after all there's no money to be made from old cars, only new cars bring in taxes.
people who would use public transport already use it. the rest of the people who are forced to use a car because they live in the countryside, or simply don't wanna drive 2 hours to work instead of half an hour, will be FORCED to make the switch to electric, whether they can afford it or not. Can't really explain this point, but the government will force something whether people can afford it or not. Similar situation now is that they're banning oil heating (radiators and shit) and you have to get a renovation upwards of 50000 euros if you don't wanna freeze in the winter.
have you even looked at the state germany is in? rofl.
mercedes' main target demographic here is young turks who lease (yes lease, not rent or finance) expensive cars. Selling cars is what brings in money. And once again, money is more important than anything else.