Is expiation (kaffara) obligatory for someone who caused the death of a Magian (Zoroastrian) in a car accident?

If a person was speeding and swerved his car into yours, causing it to overturn and him to die, then there is nothing upon you, neither expiation nor blood money. To search for your question on the website, go to the homepage, then choose "Fatwa Center," where you will find "Search by Question Number." Then enter your question number, which will appear to you after submission.