vehicle will loose power and will not transfer power to the drive train

What is your question?

left baseball game and drove a couple miles in stop/go driving then got up on the freeway, then the engine lost power and the trans would jerk around till it was stopped. had elect. power thru this. after stopped I turned to motor off and everything mostly worked. transmission took some time to "remember" the shift points. this had happened once before, and I assume that the battery is good as it was replaced last summer?