How do I fix a sagging car door?

I was planning on driving through Arkansas and stopping at a few places along the way. I know that speed limits change from state to state, so I wanted to make sure I don’t speed. What’s the speed limit in Arkansas?

My friend invited me to a basketball game in Memphis and I’ll be driving up there soon to go. What’s the best way to get there from Houston and how long should I expect the drive to be?

I was involved in a not-at-fault accident and my car was marked a total loss. I have gap insurance and tried to submit a claim. However, my lender told me I had a negative gap and wasn't able to claim anything, especially since my vehicle had prior damage. What should I do?