By Abhirup Roy SAN FRANCISCO (Reuters) – Tesla CEO Elon Musk said on Wednesday Chinese automakers will “demolish” global rivals without trade barriers, underscoring the heat the U.S. electric vehicle market leader faces from the likes of BYD, who are racing to expand worldwide. Musk’s comments come after Warren Buffett-backed BYD – with its cheaper models and a more varied lineup -overtook Tesla as the world’s top-selling EV company last quarter, despite Tesla’s deep price cuts through 2023. Chinese car companies were the “most competitive” and “will have significant success outside of China, …