Would the Bay Area Opelers be open to coming up to the hills for a tour?
Maybe meet in Sacramento,eat brunch, drive up to Auburn, then head to OGTS along 49, talk about a windy road.
Sonora and the area have many nice places to eat. Great pizza place we seem to keep going to.
Not trying to take over but just another option.
Sacramento to Auburn 32 miles, 30m.
from: sacramento, ca to: auburn, ca - Google Maps
Auburn to Sonora 100 miles, 2h 22m.
from: auburn, ca to: sonora, ca - Google Maps