My wife car is a 96 neon we was on the road and it started missing and stalled now you can start it up and it runs fine in park or reverse but when you put it in drive and start rolling it stalls what could it be

 

could just need a tune up, check the plugs to see if there fowled, might also needs some new wires, try Running a bottle of fuel injection cleaner, and ohm test the coil pack for consistancey between all the ends just some suggestions, Good Luck !!