34 of 50
34. Pam Nicholson
34. Pam Nicholson
President and COO
2008 rank: 29
Age: 49

A possible CEO candidate, this 28-year Enterprise vet began behind the counter and is now managing the National/Alamo integration.

NEXT: 35. Joanne Maguire
Last updated September 15 2009: 12:58 PM ET
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