Catalytic converters do not contain gold but platinum. Also, most of the gold in cars is electroplated and nearly impossible to recover.
10 minutes in at a luncheon a character states "Nothing Beats Penfold's Grange '99" (in reference to the wine they are having, which is [in fact] very good). However, Penfold's does not use green bottles, as is the wine on the table. It would be a brown bottle with a white and red label.