When I did a temporary W-2 driving gig using my own car, they paid me the standard mileage rate, which I think is .65 cents a mile this year, and they were insured in case anything happened while I was driving for them. If the mileage is too high, plus the insurance, it may make more sense for you to rent them a car like one of the other posts said. It would depend on how many miles they were going to be driving.
When I did a temporary W-2 driving gig using my own car, they paid me the standard mileage rate, which I think is .65 cents a mile this year, and they were insured in case anything happened while I was driving for them. If the mileage is too high, plus the insurance, it may make more sense for you to rent them a car like one of the other posts said. It would depend on how many miles they were going to be driving.