雷军再谈造车：YU7是小米最后的底牌

Group 1 - The core viewpoint of the article emphasizes the ambition to create the world's strongest pure electric performance vehicle, positioning itself against established brands like Porsche and Tesla [1] Group 2 - Lei Jun discusses the YU7 model as Xiaomi's final card in the automotive sector, indicating a strategic pivot towards electric vehicles [2]