 A compromise in terms of transition to Electric Vehicles (EVs), and a non-electric car ban implementation around 2030, maybe for acceptance of Hybrid cars with modest size petrol engines (regardless of whether ‘Full’ or ‘Mild’ hybrids), for example those at/ less than 1.6Litre (1600cc) engine capacity, and/ or at circa 100g/km CO2, or less in terms of emissions, or a fuel efficiency rating (L/100 km ) for Highway/Extra Urban and ‘Combined’ journeys.The varieties of hybrid electric designs can be differentiated by the structure of the hybrid vehicle drivetrain, the fuel type, and the mode of operation.In 2007, several automobile manufacturers announced that future vehicles will use aspects of hybrid electric technology to reduce fuel consumption without the use of the hybrid drivetrain.