OK, you guys got my curiousity up, so I did some digging--gotta love digital access to newspaper archives.
Nothing about the drunk driving thing, but found this in an old San Fran Chronicle (Aug. 7, 1994):
"Perhaps more than any other individual, Lightner can claim credit for the 30 percent decline in drunk driving that's taken place since the
1970s. ... So what in the world is Lightner doing opposing her former allies? It's a balmy evening in Orlando, Florida, and Lightner is lounging just inside the open balcony door of a hotel room high in Marriott's World Center. Barefoot, wearing a loose cotton skirt and oversized T-shirt, Lightner is draped across an armchair, winding down from what she called her dog and pony show at the American Beverage Institute's annual conference. Since last November, as a lobbyist for the Washington, D.C.-based Berman and Co., Lightner has served as the institute's most visible weapon in its fight against .08 bills around the country.The American Beverage Institute, Lightner insists, is hardly an evil cabal of hooch-pushers. It's a trade group made up primarily of restaurant and hotel executives who fear that a .08 limit will cut into alcohol sales by making social drinkers too nervous to tipple. Its members argue that MADD wants to impose de facto prohibition by slowly whittling away at people's right to drink. 'The MADD agenda has shifted to an anti-alcohol agenda,' says Rich Berman, the lobbyist who hired Lightner. 'They have talked about higher taxes, bans on advertising. These things have nothing to do with drunk driving and everything to do with dissuading people from drinking.'"
So lay off Candy, she likes beer now.