I am looking for a car insurance that would allow me to easily add temporal drivers (such as family) when they visit. These drivers would stay for a week or so, some might be foreigners. Do you know if anything like this exists? Which car insurance would you recommend?
Not sure that anyone ensures time travelers no matter what country they are from.
Most insurance companies can add the drivers on for the time that they stay in your household and drive. Then when they leave, they could list them as non operators.
Most insurance companies cover that case