I dont know about renting a wrangler, but there is a lot of cool places to see like Emerald Bay, which is good for a nice view of the castle, a hike to the lake or a hike to the bottom of Eagle Falls (my favorite). Also, another nice place to go sit and chill, is over at Zepher Cove and order up some drinks from the bar (they bring em to you) and sit by the lake enjoying the views.