Pretty sure that Tesla didn't use Colossus. Tesla used Cortex 1 and Cortex 2 which are at the Gigafactory in Austin.
Tesla famously never got to use them https://arstechnica.com/cars/2024/06/elon-musk-is-diverting-...
Tesla famously never got to use them https://arstechnica.com/cars/2024/06/elon-musk-is-diverting-...