I am always amazed how car companies manage to find little add ons for a car to earn more money. Tesla is no different than the other manufacturers in this way to make additional revenue. In a recent email, they are advertising several different gizmos such as a carbon fiber upper door sill. I haven’t had these for 2 1/2 years. And why do I need or want one? or probably two? I also find it a bit unsettling that the prices are not listed on the web page.