This Project focuses on private-sector and govermment-led policy options for encouraging the adoption of more fuel-efficient cars. It uses an experimental study design to investigate how information on fuel-efficient cars and test-driving of a hybrid or a fully-electric car affect (1) preferences conceming (un)desirable attributes car owners associate with more fuel-efficient cars, (2) intentions to switch to more fuel-efficient cars; (3) preferences towards a wide range of govermnent interventions that might be used to increase the vehicle fuel-economy.