I thought the free roadside assistance (not the warranty) was available for any problem, even a flat tire.I thought the belt was considered a "consumable item" and therefore not covered under warranty/no free roadside assistance. I could be wrong though.
Sure you may have to pay for a new belt (which you would anyway), but not the roadside assistance. That's how I understand it.
And yeah, as far as the Cruze goes; way too hard to change it on the side of the road unless you're always carrying around a jack and the right tools.