I'm glad there's some interest in moving forward with this.
Some thoughts: 1. We could host the first one here in the SF bay area. We have lots of great roads and intersting stuff to see. Just a matter of determining the dates, the routes, and determining some lodging for out of towners.
2. We could pick a location midway between SF and LA and do similar planning. This would be a bit more challenging for planners without lots of local site knowledge.
SO let's start with defining a weekend that most people would be available for. How about Oct 26-28 ? Please let me know, if there is enough interest I'll keep working on it.