As Elon would suggest, let's take this down to first principles. In some ways, Germany, with its focus on carbon emissions and clean power is a great market for EVs. There is a big obstacle, however. Air resistance at highway speeds is proportional to the square of the velocity. Kinetic energy is also proportional to the square of the velocity. What this means, is that there is a bigger physics barrier to making an acceptable Li-ion battery EV to run long distances on the Autobahn. Battery tech is going to reach "awesome" levels for the US a lot sooner than it will reach "awesome" levels for Autobahn-stormers.
(In fact, you could probably work out the approximate timing of this occurring using graphs of industry-wide improvements in Li-ion batteries and extrapolating when it will reach 4x today's capacity/weight and capacity/cost as a back of the envelope calc.)
(In fact, you could probably work out the approximate timing of this occurring using graphs of industry-wide improvements in Li-ion batteries and extrapolating when it will reach 4x today's capacity/weight and capacity/cost as a back of the envelope calc.)