the way i see it is that this plan is just another marketing ploy. it looks like you have to give up other incentives in order to choose this plan. so instead of getting a $3,500 rebate plus $2,000 bonus cash for a total of $5,500 in incentives on an 05 Crossfire you get a $2,400 debit card, 2 years maintenance, and a mechanical 5yr/60K mile warranty.

keep in mind that '05 Crossfires with the exception of the SRT come with 7/70 drivetrain protection. the 5/60 warranty is strictly mechanical and might only cover just the engine and transmission. so it has no/little additional value for an 05 Crossfire. the two years of scheduled maintenance on a crossfire is also not of particularly high value. during two years of scheduled crossfire maintenance the only significant maintenance costs will be two oil changes (slight chance you might require a third depending on how you drive). you won't need tire rotations (though you could do a side to side rotation), tune ups or other maintenance other than visual inspections and maybe lubricating door hinges, etc. so the actual value of the maintenance on the typical crossfire for 2yr/24k miles is realistically only $300-400.

unfortunately, the domestic manufacturers have to continuously develop new gimmicks to sell cars. unless i'm mistaken on the point about choosing between existing incentives or miles of freedom, a potential crossfire buyer is much better off using the existing incentives.