“Federal lawmakers need to change the rules so that vehicles converted to use new fuels can be put on the road; the only restriction should be that they pass the same standard state tests that all other cars do.”

American aerospace engineer and author

Robert Zubrin is an American aerospace engineer, author, and advocate for human exploration of Mars. He is known for arguing that space will shape future military and political power, and for making the case for a stronger American role in space. His writing often turns on Mars exploration and on the strategic importance of space. He has also argued that control of space will matter in future conflict, and that peace on Earth depends on preparing for war beyond it.