My Ranger has stop and go and Auto pilot! Have not touched the gas, break or steering wheel since I bought it! It is all in the Manual you just have to read between the lines.
I like the ACC feature as is. As to the comment that we don't have the hardware required for stop and go in traffic, we 100% do have the hardware if we have ACC since the truck can control braking, accel and gear, and also has all the needed sensors then it has all the hardware. The software may be another story. If there were trims with stop/go from the factory and the only difference between a lower model with other features that add all the needed sensors and the higher model with these features is an option in the BCM/PCM/ABS/IPMA module(s) that enabled it, by all means, flip the switch(es) and test. But test on a closed circuit first, not with some random person in front of you that has no idea you are testing.