Shut Up and DriveNo. 4 out of the 14 plays that make up Radio Music Theatre's enduring, hilarious saga of the Singing Fertle Family from Dumpster, Texas, this is the most physical of the comedies so far -- and every bit as wacky and laugh-out-loud funny as the preceding ones. In this installment, daughter Carol, who lives the high life in San Diego with husband George, feels guilty for not seeing her low-life family, and so invites Mom, Dad and brother Earl for a visit. This coincides with sister Justicena's visit to Dumpster, so in typical Fertle fashion, the entire clan ends up coming along, including Uncle Al and girlfriend Gwenda. Nine family members pretzel themselves into Lou's Buick Riviera and set off for sunny California. That the whole panoply of nutsy folk is played by the three multitalented members of RMT only makes this feat more impressive. Somehow, the overloaded Buick limps into "San-di-damn-ego," as Lou calls it, and Act II is off and running amok as the family collides in utterly unpredictable, funny ways. Steve Farrell, Vicki Farrell and Rich Mills are wondrous on stage, as are Mark Cain and Pat Southard backstage with their sound effects and music mixing. Through August 27. 2623 Colquitt, 713-522-7722.