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Door-To-Door: NASCAR getting the lead out

NASCAR is switching to unleaded fuel in 2007, and that has some wondering when real alternative fuels get on the agenda. What's up with Junior and DEI? Will Rockingham get a second date back? Marty Smith has some answers in Door-To-Door.

Updated: February 15, 2007, 2:40 AM ET
By Marty Smith | ESPN.com

The 2007 NASCAR season marks many new eras, most of which are plenty well-documented -- Toyota, COT, JPM, ESPN The Return, etc. But one -- arguably the most important but least sexy -- is hardly discussed.

The unleaded fuel era.

For the first time in its 59-year history, NASCAR teams in the top three series will use unleaded fuel in competition almost solely, the lone exception being the season-opening Speed Weeks festivities for Nextel Cup teams.

Other than ...

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