1997 Dodge Neon Car Running Fine Parked Couple Hours Drove Blocks Just Shut

There's dozens of parts that all have to work and you know we can't diagnose the bad one over a computer. Have you checked for spark? Fuel pressure? Does the engine sound normal when it is cranking? Crankshaft position sensors and camshaft position sensors often fail by becoming heat-sensitive, then they work again when they cool down for about a half hour. To have sat for a couple of hours, then not driven far enough to get warm yet is more typical of a broken timing belt, but there are a lot of other things to look at before assuming the worst. Have you checked for diagnostic fault codes?