 Patients able to walk faster, avoid obstacles, and do things like climb stairs much more naturally than people with a traditional amputation. Sherry Preston, ABC News. Despite price cuts, Tesla's global sales fell for the second straight quarter. The company says sales from April through June were down 5% from the same period a year ago. Analysts say it's another sign of weakening demand for Tesla products and electric vehicles overall. While sales numbers have declined, Tesla is still the world's top-selling EV maker.