2002 Hyundai Senata just stopped running. Went over a speed bump and car just shut off. It seems as if car is not getting any fuel. Does car have a fuel cut-off switch somewhere?

More than likely it does. Most (if not all) modern cars have a shock sensitive switch to cut off the fuel supply in case of an accident. Check the owner's manual. It is probably on the firewall behind a trim piece. It will have a reset button to turn the fuel system back on.