Misc: In greek mythology, mnemosyne is the mother of the ______?

Questions

Elvis: Elvis's personal doctor who was acquitted of over-prescribing Presley drugs.?

Elvis: Elvis's personal number in numerology, which held great meaning for him.?

Elvis: Listed as official cause of Elvis's death on his original death certificate.?

Elvis: Strange 3-wheeled car manufactured in Germany, purchased by Elvis in 1956.?

Elvis: The area at the rear of Graceland where Elvis & his parents are buried.?