Hmm - H.R.L. - a new title - I like it!

Yes - a ride on the Bay Trail and lunch and then the tour would work fine. It will be totally flat (except for one small hill), and quite possibly breezy! But beautiful views...

The primary logistics question is one of parking. Any idea how many cars we are talking about? With a rough count, I can call the factory and ask how they feel about the parking issue - that would be the easiest solution!
There is plenty of public parking at the Emeryville end of the trail, and I'm almost 100% sure that there is public parking at the Richmond end too - I will confirm.

At the Richmond end of the trail is a nice little grocery store/cafe where they make good (and inexpensive) sandwiches. We could then ride out to the very end of the Richmond Marina and eat our lunches watching the boats come and go, if it's not too windy, or go to one of the more sheltered picnic areas (and the cafe has some sheltered outdoor seating too) if it is windy. The benefit here is that our bikes would all be in our presence at all times...

If we wanted to eat at a restaurant, there is a Chevy's in Emeryville (the south end of the trail) which has a waterfront view and plenty of space to accommodate a large group, and the pro (or con, depending on how you feel about Chevy's!) of being consistently Chevy's. I'm not sure what we would do with our bikes while we ate, though.

Any Berkeley TE folk have other/better suggestions? Of course there are a gazillion other places to eat off the trail in Berkeley, but I'm not sure how well they would accommodate a group of cyclists (and their bikes).