As you might remember, the scandal (in the US, at least) revolves around about a half-million TDI vehicles here that emit more (a lot more) NOx than they are supposed to because Volkswagen built in software that was designed to get around emissions tests. Bloomberg says that the clean air offset fund might be included in the deal because VW won't be able to fix all of the vehicles. The program might work like the program funded by the Diesel Emissions Reduction Act. DERA funds help retrofit dirty diesel vehicles on the road to make them cleaner.
That "up to $7,000" amount could be as little at $1,000, Bloomberg says, because the final value will be determined by the age of the vehicle, among other things.
If the final fee in the US does come to $10 billion, that'll be a good deal less than the original number that was bandied about when the scandal broke last September of $18 billion, but the global costs will surely continue to grow.