Why car shuts off while driving and wont restart

My first thought was that your alternator is going out. the alternator is producing too little current to keep the engine running properly..... But then i thought that leaking fuel injectors seemed more likely. When an engine's cold, the excess fuel isn't so much a problem, but when warmed up, it floods the engine, sending raw gas into the exhaust, causing exactly the troubles you've described. That excess fuel has also fouled plugs, making restarts a problem. Next time this happens, push the throttle to the floor, This signals the computer to do a wide open throttle (WOT) that clears out the fuel for a successful restart.

Any codes? Fuel pressure problem, exhaust system restriction. Cam and crank sensors.