Nice looking truck. I imagine the island is filled with low-mileage older vehicles, because really, how far can you go in one trip unless you're doing circles around the island.
I've been there a couple times and it doesn't take that long to go from one end of the island to the other. I think at it's wides point it's around 50 miles from what I remember.
I liked the mountain biking there. Interesting trails with lots of exposed roots.