The ss_lambo.zip file you have requested: Skins / Steam / Lamborghini Steam Skin - 181.35kb is not available. Perhaps try browsing all files for the game Half-Life 2 and upload any files you want to share or are missing. This is the only information we could locate:
This is a very nice looking Steam skin of a black Lamborghini. Simple, but very nicely done. Works great, just read the readme and install it.