masses – n. the ordinary or common people

battery – n. a device that is placed inside a machine, such as a clock, toy, or car, to supply it with electricity

accelerate(s) – v. to gain speed

scandal – n. an incident in which people are shocked and upset because of behavior that is morally or legally wrong

emission(s) – n. something sent out or given off

convincing – v. causing someone to believe that something is true

customer(s) – n. someone who buys goods or services from a business

efficiency – n. the ability to do something or produce something without wasting materials, time, or energy

incentive(s) – n. something that convinces a person to do something or to work harder

rental – n. something that can be available for use in return for payment