Well sort of; they're borrowing the idea of the 'wildcard'.
All this means is that they can avoid the situation that came up at the end of last year when the Cup season was over and Ambrose was back home and hoping to drive in the final race...he couldn't due to the rules so the V8 bigwigs changed the rules.
It's posted on the yahoo site and, I reckon, is actually a good idea.
NASCAR sort of have it already given you can swap drivers about as often as the teams swap tyres, so they probably won't 'borrow' this idea like they have with a bunch of others (the wing, the 'have at it boys' mentality...still waiting on the Cup boys racing in the rain though).
Nifty thinking and could be a great way to boost the international awareness of the series.