Hi, Moe, and welcome to FGRV!
So, now that you're here, we can start convincing you that what you really need is a small fiberglass trailer, since that's what this forum is about.
Nice thing about a trailer is you can leave it at a campsite while you explore back roads. I'm guessing most archaeological sites are not on the freeways…
Whatever you decide to do, have a great trip!