There are many cars and many car owners and many car drivers in Germany, I think the stat is something like >3/4s Germans own cars. There happens to be public transport and bicycle infrastructure proportionate to the density of a region (ie more in cities), but lots of Germany is still rural, sparsely populated, and dominated by cars for getting around. If you aren't from/in Germany and visit it, you'll see how popular cars are here and that is unlikely to change soon.

There are 49M personal vehicles in Germany out of 83M people.

You really think it’s that rare for a German to drive?

Didn't assume it's rare, just if it's the majority. But yeah your numbers clearly point to a majority being drivers. I guess even most public transport users do have a car then for occasional use.