Tom and Ray Magliozzi, the Peabody Award-winning hosts of Car Talk on NPR, are better known as "Click and Clack, the Tappet Brothers" -- taking their names from the clickety-clack sound made by aging autos. Tom, 66, and Ray, 54, dispense car advice in the broad accents of the tough East Cambridge neighborhood where they grew up. Both are graduates of the Massachusetts Institute of Technology. Saturdays 10 AM and 6 PM
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