Complex sentence: The Smart Fortwo electric drive (or smart ed) is a battery electric vehicle variant of the Smart Fortwo city car, formerly marketed as the Smart Fortwo EV. Field testing began in London with 100 units in 2007.
Split into simpler sentences: The Smart Fortwo electric drive (or smart ed) is a battery electric vehicle version of the Smart Fortwo city car. This electric car was formerly known as Smart Fortwo EV. Field testing began in London with 100 units in 2007.