www.gmflexcard.com , does show redemption limits, but some are higher then then the current New GM Card limits. Example, $1,000 on GTO for current car, shows $2,000 for the Flexcard.
Will give people the ability to earn money they could use for GM accessories or upgrades. Can use the money back feature for used cars. Allows GM to market directly to those that sign up. Earnings may even be stackable with some current cards.
Can't hurt GM.
Just have to make sure you pick the best card, I guess.