I dont know about NH, but I'm pretty sure its required for IFTA/IRP that you keep an individual mileage record for your truck so you can corroborate the info you filed with ifta/irp in the event of an audit. Correct me if I'm wrong...

I think your correct for NH also. I made up a form that I've been filling out every day to keep track of mu mileage and where I buy fuel. What a pain.

Is that your truck in your picture? I didn't know they made convertibles.

I prefer the term "drop top" myself