100 miles free per day of rental. After reaching your 100 free miles per day, mileage costs start at $0.25 per extra. For example; 10 day rental gets you 1,000 free miles and the next 100 miles will cost $25. If the vehicle has an onboard generator, you will receive four free hours of use per day of rental. After using your four free hours per day, generator use will cost $4 per hour.No cost for insurance when you add the trailer to your personal auto insurance by way of a binder.*