Vanderwhacker caution
Rivet --
I took my Honda EX Accord in there in September of 2002. The drive in was extremely slow. I was sure that I was going to leave my oil pan and/or other vital parts along the road due to the protruding, unavoidable rocks and steep grades.
That day, there was one other hiker who drove into the trailhead in a small pickup truck with much higher clearance and 4WD. My hiking partner and I finished about the same time as this other person. He started back to the main road first, but waited for us at every difficult section (and there are many) -- especially one very steep section that my Front WD Honda kept spinning out on. For a time, I didn't think I was going to make it out. I eventually did. However, in my log book I recorded, "Extremely rough, dangerous road. Don't drive this road again unless using 4WD/offroad or high clearance".
Now, perhaps I overreacted or merely projected what the economic loss would have been in addition to the inconvenience of getting towed out of there, but I don't think so.
BTW, the hike is great and the firetower an added plus, but the potential for something to happen to a regular passenger car remains high and precludes the thought of ever returning.