Cars we should use

We would all like to drive cars like these but as we know these cars are first of all expensive and second of all they are unpractical because they let out alot of carbon dioxide and this is damaging the enviroment, so the need for switching to more enviromentally cars is becoming greater. We need more cars like this:

audi image credit goes to houstoncars.org

smart car image credit goes to tcnj.edu