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From the press release:

XM Satellite Radio's Hot Import Nights (HIN) wraps up the 2006 season with its Miami event at the Miami Beach Convention Center, 5 p.m. to midnight. HIN, the nation's largest lifestyle custom car show, has packed convention centers around the nation all year, and will continue the trend in Miami with performances from Cassie and DJ Miss Lisa, hundreds of the nation's hottest customized and specialty cars and the crowning of Miss HIN 2007.

The performance is on December 16.