[reg45]

I’ve never been to California and I know what PCH means.

[Paladin2]

There’s a lotta “H”s across the country....

It could’a been PorchControlHierarchy.

Or some Spanish thing.

[Dilbert San Diego]

Pacific Coast Highway.

There are local contractions such as this elsewhere. For example, New Yorkers call the Brooklyn Queens Expressway, BQE, rather than saying the entire formal name.