Hydrogen (H2) is being explored as a fuel for passenger vehicles. It can be used in fuel cells to power electric motors or burned in internal combustion engines (ICEs).

It is an environmentally friendly fuel that has the potential to dramatically reduce our dependence on imported oil, but several significant challenges must be overcome before it can be widely used.

A hybrid vehicle is a vehicle that uses two or more distinct power sources to move the vehicle.[2] The term most commonly refers to hybrid electric vehicles (HEVs), which combine an internal combustion engine and one or more electric motors. However, other mechanisms to capture and utilize energy are included.

2 different sources of fuel for cars that are more environmentally safe