There is no additional infrastructure for plugging a vehicle like Hyundai that supports V2L into a generator socket. Except a 20$ adaptor. You only get 15A from it but that’s enough to run key functions for 5 days silently and exhaust free.
Here’s video summary https://youtu.be/ZmmhOXsIRjw?si=eZh_MCWJjhrwNpm9
The trick with Bolt EVs is that one must have the car on, because the high voltage battery will not engage when the car is off for safety reasons. Also, the car shuts off every hour of unless the seatbelt is fastened. This is not a big deal.