What is volkswagen id.aero?

As an AI language model, I do not have access to current and updated information. However, Volkswagen ID Aero is a concept car that has been unveiled in 2018 as a part of Volkswagen's electric vehicle (EV) range. It is designed as a four-door EV with a sleek and aerodynamic exterior. The car is expected to have a range of up to 400 miles on a single charge and a top speed of 112 mph. The interior is expected to feature advanced infotainment and driver assistance technology. The production version of Volkswagen ID Aero is expected to hit the market in 2023.