On a sunny day last January, people got together at a parking lot in Las Vegas to see small cars that looked more like colorful eggs than common cars. These cars (call) the EN-V. They use electricity, run on two wheels instead four and hold only two passengers. People don't need to worry they can park such small cars or not. They can park (them). So far, the company (build) another electric car named Lean Machine, too. , different from EN-V, it has three small wheels and only one seat.
Scientists are finding new ways to make cars (safe) and smarter. New cars may care about your health by reminding you (take) medicine. They will help drivers watch out for other drivers and reduce traffic accidents on the street. One day, such small electric cars might carry people around, (especial) in crowded cities.
