a new key can be created, but you will need a locksmith that knows his stuff.. ie. he will have to know how to cut a shaft to fit an existing ignition barrel (without an example key!), and then he will need to know how to use the existing EWS unit to program a new transponder to work with the existing ews..
the only locksmith i know of that could possibly perform all this would be in esselin steet in sunnyside, pretoria.. right at the end, near the bronberg church.
gl!!