Car won't start

While driving on the expressway at approx. 60mph the oil light came on and the car died while in the flow of traffic. Very bad situation when all of a sudden a car cuts off on the expressway. Tried several times to restart car. Its started but only ran for a few seconds and cuts off. It just slowly dies and will not start back. Checked and even add a little oil but again can not get it to start. Turns over very strong as if it is about to start but just can't. Any help will be greatly appreciated. Thanks