Editing Code to save files as KMZ

Question

I want to edit the code I have below to save vector files as vectors and also save vector files as KMZs.

The code I have does a mass save to my temporary folder but only for rasters.

myDir = r'C:\temp'
layers = layers = iface.mapCanvas().layers()
pipe = QgsRasterPipe()
for layer in layers:
   extent = layer.extent()
   width, height = layer.width(), layer.height()
   renderer = layer.renderer()
   provider=layer.dataProvider()
   crs = layer.crs().toWkt() 
   pipe.set(provider.clone())
   pipe.set(renderer.clone())
   file_writer = QgsRasterFileWriter("%s\\%s.tif" %(myDir, layer.name() ))
   file_writer.writeRaster(pipe,
                       width,
                       height,
                       extent,
                       layer.crs())
   print "%s\\%s.tif" %(myDir, layer.name() )