Xiaomi likes to bring cars to Barcelona; the company gave us the first glimpse of its SU7 Ultra supercar during last year's MWC in March. This year, however, Xiaomi has unveiled something that's pretty far out there, even by its own standards. Called the Xiaomi Vision Gran Turismo, it's a hypercar that was designed to go really fast while slicing through the air in a way not many cars (or race cars, for that matter) can (Xiaomi says it's been "sculpted by the wind"). It feels kinda empty in there. Credit: Stan Schroeder/Mashable The company will bring the concept car to its MWC show floor in Barcelona on March 2, presumably when we'll learn more about its powertrain, acceleration, battery, and other trivialities. Today, however, Xiaomi was mostly focused on how the air flows through the car, using a variety of wind tunnels and channels (and even a moving part on the car's bottom) to make it more efficient. The wheels and wheel covers are special, too.…