Chicago now serves as home to an Uber fleet comprised of 25 all-electric cars. They're not Tesla Model S vehicles like that Uber ride Engadget's editors hailed back in 2013, though -- they're BYD e6 EVs straight from China. Uber has teamed up with Chinese automaker BYD or "Build Your Dream" in an effort to help its drivers either buy or lease new cars. While it seems odd that the company has chosen to partner with BYD instead of with manufacturers more well-known in the country like Tesla, e6s are larger than many other EVs. It's already being used by a chauffer service in London (and a taxi company in Hong Kong) for that reason.