是红萝卜不是白萝卜:From Tesla 2020 10-K: Historically, we have been able to generate significant media coverage of our company and our products, and we believe we will continue to do so.Such media coverage and word of mouth are the current primary drivers of our sales leads and have helped us achieve sales without traditional advertising and at relatively low marketing costs. ;a decrease of $90 million in customer promotional costs, facilities-related expenses and sales and marketing activities——事实证明,有广告费/营销费,但是营销方式和传统车企不同,因此费用低很多。