R help - Nov 2012 - export home range image to google earth (alternatively a shapefile)

I calculated a homerange using the adehabitatHR-packaged, "plotted" it
and
now I want to export the image (image with the contourlines) to google maps.
I just don't get how to do that. 
Here is something like my image: 

library(adehabitatHR)
kudl  <-  kernelUD(puechabonsp$relocs[,  1],  h  =  "LSCV")
vud  <-  getvolumeUD(kudl)
image(vud[[1]])
xyzv  <-  as.image.SpatialGridDataFrame(vud[[1]])
contour(xyzv,  add=TRUE)

To create a KML I thought I'd use 'plotKML'.

But I don't get it. Does anyone have any idea? 







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