"The Theodore Roosevelt International Highway was a transcontinental North American highway, from the era of the auto trails, through the United States and Canada that ran from Portland, Maine, to Portland, Oregon. Its length was about 4,060 miles (6,530 km)."
What a great picture!
I don't think that picture was anywhere in the area between Maine, Canada, or Portland Or. It looks like somewhere along the southern California Cost maybe Malibu?
I'm thinking left coast too.
I agree with the idea that's a west coast photo. It could pass for any one of a number of spots along Highway 1 in California between San Luis Obispo and Ventura.