w trickle of veteran NASCAR drivers calling it quits has suddenly turned into a flood, leaving many wondering who's next and who ultimately is going to be left.
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Thursday, <a href="http://sports.yahoo.com/nascar/nextel/drivers/4/">Mark Martin</a> became the latest stock car cowboy to announce he'll be riding off into the sunset. The pride of Batesville, Ark., revealed that 2005 will be his final season as a full-time driver on the Nextel Cup Series circuit.
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"I'm too young to retire, but I've had eno