On Wednesday investors await the minutes of the Federal Reserve's December meeting, along with December auto sales figures. The minutes are released at 2 p.m. ET and are of extra significance because the Fed announced a rate hike during its December meeting. The minutes will reveal a closer look into the hawkish outlook the Fed issued following the meeting. Other economic data points include December auto sales, which will be released throughout the day by the major automakers. The ADP Employment Report for December is unveiled at 8:15 a.m. Eastern. Plus, it's a quiet day on the earnings calendar with Sonic (SONC) releasing results after the markets close.