Lady GaGa and Ashton Kutcher are among the stars Los Angeles authorities have approached to help spread the word about a freeway closure.
Officials at the Los Angeles Police Department (Lapd) have begun a massive campaign to warn drivers that California's Interstate 405 will be shut for three days in July (11).
They've even asked actors, musicians and athletes who are popular on to tell their followers to avoid the road amid fears it will cause chaos for thousands of motorists.
Lt. Andy Neiman, an Lapd spokesman, tells the Los Angeles Times, "The whole idea is just to re-message the theme of avoiding the 405 area and that it's going to be a mess if people don't stay away...
"Twitter is a way to reach that whole demographic that could be oblivious to the 405 closure for that weekend."
Gaga, Kutcher, his wife Demi Moore and Kim Kardashian have all been asked to join the Twitter campaign, while former CHiPs star Erik Estrada has filmed a public service announcement about the closure.