Hampshire Constabulary will begin a trial of an all-electric Mitsubishi i MiEV this week. It will be used by a neighbourhood policing team for police business that does not require a rapid response.
The i MiEV is a fully-electric city car with zero emissions.  It has four doors and seats four adults. 
The car has a top speed of 87mph. A full charge from any UK three-pin socket gives a travelling range of 100 miles. A full charge takes six hours and costs 96p.