A battery-powered conversion of the world's best-selling sports car has been produced by a small company in Oxfordshire. A 20-year-old Mazda MX-5 has been switched to electric power by Electrogenic.

The MX-5 may not have the everyday practicality of some of its rivals, but the level of involvement behind the wheel puts this small Japanese sports car in another league. Power comes from a fizzy ...