I've been up in my Bronco back in 2002. That was an assume sight to see. I loved it. The steepest part is definately in the beginning. All you see is sky!!! Make sure there are some clouds that way at least you are reaching for something ahead of you.....
Views are fantastic. It's not for the fear of heights type as the edge up top just rolls over. There really isn't an 'edge' per se. Lots of room up top to turn around. Lots of other ledges also.
It's also a pay fee rock. Someone has ownership to the ground in front of it. To get to the rock, it'll cost some little green.
However, it's one of those awesome sights to be at when in Moad. Other sites, if you can't drive up, walk up, Moab rim and Cliff Hanger. Gotta love the views.....
If you doubt that you can't drive on the trails in Moab, get the Wells book on Moab. There are more trails for stock, near stock vehicles. Only those trails which are more difficult get all the mag write-ups.