I have a 2001 Hyundai Santa Fe. What cause it not to drive at all?

Check transmission fluid level ..... It's possible the shifter cable at the transmission linkage or at the shifter itself may have become dislodged (unhooked) or is broken .. Look under hood at shift linkage on drivers side while helper shifts back & forth through all gears .. Do you see 'anything' moving while helper is shifting gears?

if the fluid level is full and the car does not move in either direction and is making a noise,then one would think the transmission has gone KA-POOT,SHOT,NO GOOD,NEEDS REBUILT,etc! you want to know why this is happening? we don't know.we can't see the inside of your transmission,but sounds like someone needs to open it up and look inside it for real! Poor Shift Quailty of Automatic Transmission on Hyundai Santa Fe Problem Description and Possible Solution Prior to replacing the automatic transmission fluid (to improve shift quality), make sure that the transmission fluid level is correct. Also, make sure the computer that controls the transmission has the most up-to-date adaptive programming information. When servicing these transmissions be sure to use fluid approved by Hyundai. Problem Data RepairPal Verified Average mileage: 102,400 (8,000–200,000) Drive Trains affected: 2WD, 4WD, Automatic Transmission 12 model years affected: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012