Actually, SR-1 ends in San Juan Capistrano, north of Pendleton. The coast highway is local road S21 south of Oceanside 🙂
Said road is already 4-6 lanes in many places. It’s a lot faster than the equivalent road in my neck of the woods, which is generally two lanes with speed limits 40 mph max and a yield sign/crosswalk every block in some towns. Unlike in CA, the NJ beach towns get deserted after mid-September, so it’s only bad driving in summer.
