On the flip side, if the intelligent sensors told the car to start coasting, the gas engine could still be turned off. Combine this with plug-in options on the hybrid for recharging the battery, and you can still see an improvement on the hybrid over the standard combustion engine. If the prediction sensors are anticipating a full stop, you can still get regenerative breaking as well. After all, you're still going to get energy back from slowing down gradually rather than quickly. You might even be able to get more, as you could do more of the deceleration purely through the generation resistance, and less with friction braking.