They report that the factory has changed a lot since they visited the last time over a year ago. For example, they said the automaker has grown into the space it has and now is more fully utilizing it. In fact, they expect future expansions will result in non-assembly functions being moved to satellite facilities. Currently Tesla has five facilities, including the main factory in Fremont, the gigafactory, facilities for metal casting and assembling seats, and another light manufacturing facility in the Netherlands. The automaker is running about an 80% vertically integrated operation.