I can lift up to 5 people (including myself) with bikes up (6 minutes carpool) and we'll ride bikes down. The plan is to shuttle up (6 minutes) with whatever cars we have and ride down (5.3mi) 2-4 times. Feel free to leave at any time. We will have to give a lift to everyone who's car is on upper parking lot when they leave. The trail is mostly wide single track, advanced beginner level. 24 hours rain cancels.
Access to upper parking lot closed in a morning, but parking nearby and asking cop to go 30ft past him to get to trail on a right side worked.
Drove up to check the road - we might need to ride bikes 300ft before upper parking lot. We should be fine though - the ride is on.