I'm like Randy, given a choice I would rather do a road trip by myself. I like the freedom of me being the only one to make decisions as to where to go and where to stop. As to any terrorist attacks a 911 on an open highway is a small target!
By the way, if you are going down to Oklahoma are you going to take I-44? If so, at one point you will only be about 55 miles from my house. Should you need to do any maintenance feel free to drop by. I have any tool you might need to fix any problem that might arise.