Richmond has three car carrier facilities. Hyundai, Kia, Mazda, Mercedes, Mitsubishi, Toyota, Volkswagen, Honda, and Subaru all offload cars there. Subaru also loads cars there (probably cars shipped from Japan). I expect most of the offloaded cars are cars built in other parts of the US and they are being offloaded for sale in California. Some may be coming from the Port of Los Angeles which is the biggest car import port in the US.
Tesla probably gets a discount for loading there because the car carrier railroad cars would end up dead heading back to their place of origin without Tesla.
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