I'm located the same distance from both of these service centers, and have taken my Model S to Menlo Park in the past. However, does the Fremont center have faster access to parts and technical support? What about a Roadster? I just purchased a used one, and I want to get it's annual check along with some wheels, carbon fiber pieces, etc. Would it be better to take it to Menlo Park since that is where it had final assembly? Or are there benefits with taking it to Fremont? From pictures, I think the Fremont center is larger and can take more cars possibly? Opinions?