Complex sentence: It was meant to be fuel efficient, and gets about 100 mpg, while stating that that emissions are "Extremely low" and that "The Wheel stops when you stop, eliminating idling and emissions caused by idling".
Split into simpler sentences: It was meant to be fuel efficient, and gets about 100 mpg. Emissions are stated to be "Extremely low", with the company noting "The Wheel stops when you stop, eliminating idling and emissions caused by idling".