Does anyone know what the large white flowering plants are along Hwy 101 near San Onofre?

They seem to grow wild. The flowers are very large. It may be some kind of day blooming plant.

FlowersBirthday FlowersSympathy FlowersIsn't that near the Surfing Spot known as Trestles, if so they're called Beatniks!
Reply:possibly a gardeniamake up