This would have been phenomenal news...had DC not neutered their product last year when they implemented a feee structure for converting DC points to airline mile.
DC - always the bridesmaid, never the bride. DC card got dumped by a whole lot of people when they added this fee last year.
Day late, dollar short also comes to mind.
Ultimately, this card (DC and/or a DC/MC hybrid) will never be the "card of choice" for high volume chargers because of their inherent ball and chain feature of the DC...not known to almost any other program.