Talk about your family business: Cheda’s Garage in Point Reyes Station spans four generations and almost 100 years. The painted sign on the front of the building boldly proclaims, “Cheda’s Garage Est. 1923” and identifies itself as the “Oldest AAA Contract Station in the USA.” Deer and elk heads, one moose head and an assortment of antlers line the entrance wall. The shelves of vintage car manuals collecting dust in the back room enhance the…