I had a lot of road walking to do on the Bendire Canyon route because I drove in with a Toyota Corolla and parked far from the end of the road. However, I would say that the road really isn't as bad as the DPS "poor dirt" rating would suggest. It appeared that a 2wd high clearance vehicle would be able to get almost all the way to the road end. Also note that highway 178 is currently closed north of the junction with Nadeau Road due to flood damage although I would hope they will be fixing it soon. However you can still get to the trailhead by coming via Trona.