Zappos CEO Tony Hsieh’s Downtown Project just announced a new venture called Project 100, a complete transportation system for Las Vegas. For a monthly subscription fee, users will be able to borrow a car, get a driver thanks to an app or take a bike for a ride. But the key feature is that you’ll ride in a Tesla Model S — the Downtown Project just bought 100 Teslas. The deal with Tesla represents the largest single US reservation in Tesla’s history.