original_query: What was the reason behind Ford Motor Company replacing the name "Zeta" with "Zetec" for their inline 4-cylinder engines?
query: What was the reason behind Ford Motor Company replacing the name "Zeta" with "Zetec" for their inline 4-cylinder engines?
answer: Ford replaced "Zeta" with "Zetec" due to a trademark infringement threat from Lancia, who owned the "Zeta" trademark.