Tesla Semi fire in California took 50,000 gallons of water to extinguish

Yes, it seems you’re referring to an incident that happened in 2021 where a Tesla Semi truck prototype caught fire during testing in California. It can sometimes take a substantial amount of water to extinguish fires involving electric vehicles due to the nature of their battery systems. This kind of incident is rare, however, and Tesla is well-known for their rigorous safety standards. I’m sure they are conducting an investigation to find out what exactly happened to prevent such incidents in the future.