WMG: The New Adventures of Superman
In that episode, Lex Luthor
had a device that could easily open bank vault doors and used it in an attempt (that Jimmy Olsen unwittingly
ruined out of his belief Luthor was robbing the bank) to rescue two people from a vault before they died from lack of air. The fact he can use his skills for good purposes and probably be paid for it
and still plot evil schemes showed the possibility.