Internal combustion engines have been the primary source of power for vehicles since the invention of the automobile. However, as concerns around climate change and air pollution increase, there is a growing push to transition away from these engines. While the timeline for this transition is still uncertain, it is likely that we will see a move to electric and hybrid vehicles in the near future. This transition will be a major step forward for air quality and climate change, and will likely result in significant economic and environmental benefits.