Laniakea Research has turned the models behind its investment decisions into free web tools: one for Tesla's robotaxi business and one for SpaceX's orbital data centers. Open them, change our assumptions, and see for yourself what has to be true. Why we moved from Excel to the web For a long time our models lived in Excel workbooks. They worked for us, but they were slow, cumbersome and hard for anyone else to explore. You had to download a large file, find the right input ce