It is becoming increasingly apparent that owning and running a combustion-engined car will become significantly more difficult in the future. Fossil fuels are becoming vilified, and emissions regulations are tightened. In urban areas in particular, financial penalties are being applied to gas vehicles that drive within so-called low-emission zones. London, England is a prime example, with a daily charge for driving older and more polluting vehicles in the "ultra-low emission zone." The cost is in addition to the already established congestion charge and has led to some drivers rethinking their choice of car. Many popular gas-powered models such as the Volkswagen Golf are facing the cull.