What problems have traditional car companies encountered?

Concentrate on improving the efficiency of the engine, and at the same time, we must survive and live well in the competition. Through various ways and channels to reduce costs and prices to improve competitiveness, BYD and Tesla, two unprofessional car owners, were killed, and everyone was happy. An industry is often killed by outsiders, which has come true in many industries. At present, the development of hybrid electric vehicles is squeezing the living space of traditional car companies step by step, and if it remains unchanged, it will be finished. Let's leave now.