Save as custom PDF Presets

I have a document that I want to save the .ai file that is open....then save as a pdf with my own Adobe PDF Presets. The name of my preset is:     Machine Views

Example sudo code:

#target illustrator
var doc = app.activeDocument;
// just save it as the .ai that it is
doc.save();
// save .ai as .pdf with custom named preset
doc.savePDF("Machine Views");