Here we can see this $9 million site in a video. There is space for 50 stalls and already 25 were equipped with DC fast chargers from various manufacturers.
Volkswagen has deployed chargers with different power levels---50-350 kW---and plug standards---CCS 1 for North America, CC2 for Europe and most of the rest of the world, the Chinese GB/T and we guess CHAdeMO is also present---so basically any EV can be tested, even those sold in different markets.
There are also stalls for AC charging, but the coolest feature is a set of remote-controlled canopies to simulate the full sun and shaded conditions.
The images show vehicles already introduced on the market, like the Volkswagen e-Golf, Porsche Taycan and Audi e-tron, but of course the most important will be the tests of new pre-production vehicles.