In 2023, US drivers consumed 376 million gallons of gasoline daily, with superusers accounting for 35% of usage. Rural areas have more superusers, spending 10.2% of their income on gasoline. They also tend to drive larger, less fuel-efficient vehicles. Electric vehicle policies targeting superusers could reduce energy burdens and emissions, benefiting low-income households.
The shift from fossil fuel-powered internal combustion engine vehicles to electric vehicles is a key strategy for reducing transportation emissions. Various regulations and incentives at the state and national level drive this transition, with California leading in policies and EV registrations. The growth of EV sales is supported by policy, lower prices, improved range, and expanded charging infrastructure.
There are two main sources of greenhouse gas emissions: stationary (e.g., power plants, refineries) and mobile (e.g., cars, trucks). Transportation contributes 24% of energy-related CO2 emissions, with fossil fuels dominating. LNG in maritime transport shows potential for reduced CO2 emissions, but methane leakages must be addressed. Coal has the highest CO2 emissions factor among widely used fuels.
In recent years, 15 to 20% of global coal consumption came from traded coal. The import and export of coal rely on specialized infrastructure known as coal terminals, located near mines or strategic coastal areas. These facilities facilitate the efficient transportation of coal between various modes like ships, trains, and trucks.
Henry Ford’s early vehicles ran on ethanol, which became commercially significant in the 1970s after the phase-out of lead in gasoline. Ethanol blending has been supported by various government policies, including tax incentives and the Renewable Fuel Standard. Ethanol production surged, particularly in the Midwest, driven by high corn production. While ethanol offers economic and environmental benefits, it also raises concerns about environmental impacts and the efficacy of subsidies. Changes in ethanol demand significantly affect corn prices and agricultural practices.
In the United States, ethanol is mainly produced in the Midwest from corn, with Iowa, Nebraska, and Illinois leading in capacity. Ethanol is used as a fuel additive, with E85 being a high-level ethanol-gasoline blend used in flex-fuel vehicles. Biodiesel, made from vegetable oils and animal fats, is mainly produced in states with these feedstocks. Renewable diesel, chemically identical to petroleum diesel, is primarily used in California to meet emissions regulations.
The fuel efficiency of personal highway vehicles, particularly gasoline-powered cars and trucks in the United States, is a crucial factor in energy consumption. Vehicle weight significantly affects fuel efficiency due to basic physics principles like inertia and rolling resistance.
Access to personal mobility has played a crucial role in people’s life satisfaction, with personal vehicles revolutionizing daily life since the early 1900s. The number of global car registrations has dramatically increased over the years, reaching 1.1 billion in 2019. The energy historian Roger Fouquet explored the impact of personal transportation services in the United Kingdom from the 14th to the 20th century, revealing the economic, social, and environmental changes brought about by the expansion of personal travel.