A 2014 story by the Union of Concerned Scientists said personal cars and trucks accounted for nearly a fifth of all U.S. emissions, and that almost 30% of "all U.S. global warming emissions" came from the transportation sector, which includes cars, planes, trucks, trains, ships and freight.
In the years since, international and U.S.-statewide municipalities have put plans in place in the hopes to reduce emissions and curb reliance in fossil fuels. Along with more and more electrified and zero-emissions vehicles coming onto market, it might be the regulatory push consumers and manufacturers need.