Join Date: Apr 2015
Location: Pacific Northwest
I use this daily! You can switch in/out of it on the fly at any speeds. It's great for a variety of reasons which others have already mentioned. For me, it's mostly used to control my speed while going downhill. Also to keep the vehicle from going too high into gear, and shifting back and forth constantly while the hill momentarily levels out, while going uphill. Curvy, slightly hilly roads it's useful for keeping it from going into too high of a gear.
Another option I love, and use in place of this at times, is switching into Sport mode. The RPMs ramp up quite a bit when you first getting going from a fully stopped position, but after that, the vehicle handles so much better. Like the ERS above, Sport mode can also be switched in/out of on the fly.