Franchitti uncertain on shift to NASCAR

Dario Franchitti, who is expected to leave Andretti Green Racing to move to NASCAR next season, is still unsure if he is indeed jumping the boat.

"There are a lot of factors, and at the appropriate time I'll think about it, but right now I don't see it being the appropriate time," Franchitti said. "We just won the championship and we're in sort of the celebration stage of that. I'm not going to really think about my future until the end of this week or the start of next week at the earliest."

The new IndyCar Series and Indianapolis 500 champion said he is interested in NASCAR because of the challenge.

"NASCAR would be something different, something I haven't done. Apart from Formula One, it's probably one of the few things I haven't driven. So that would be one of the reasons to look at that," according to the Scottish driver.

Speculation on Franchitti�s career move started in May after he won the Indianapolis 500.

His fellow Indy winner, Sam Hornish Jr. also seems ready to switch to NASCAR next season. Hornish plans to qualify a Penske Dodge for his Nextel Cup debut at New Hampshire on Sunday.