I would beware of putting the bleach mix on the car interior peeps, modern leathers and materials are not as colour fixed as we may think. Last year I had a friend with a tie'n'die shirt (it was for fancy dress apparently) and the shirt was washed with a light bleach and then they drove to the party. The shirt rubbing on the seat back leather for 30 miles discoloured the seat badly and the dealer/manufacturer would not replace under warranty as the shirt was mentioned.
