My review?
It's neat, and more advanced than I expected.
But it's not worth $100/month to me. It's not aggressive enough for city driving, and doesn't speed enough outside the city. On most days, I prefer manual control. If it was a feature that stayed without cost, I'd use it sometimes, but not enough to justify a subscription.
The free trial was worth doing for the company, both because some drivers probably really liked it and will subscribe now that it's up, and because of collected data used to improve the program. Just didn't hook me.