— Interview with Jeff Crivello — Famous Dave’s expands its first line-service model and even adds a drive-thru as it grows through ghost kitchens, virtual brands, dual concepts, and strategic acquisitions of complementary brands. Nearly 30 years after the first Famous Dave’s opened in Hayward, Wisconsin, BBQ Holdings, Inc. continues to innovate and invigorate. Testing new prototype designs — including its first drive-thru model — and acquiring complementary brands are just two of the ways in which Famous Dave’s propels its impressive growth trajectory. In mid-March, Retail & Restaurant …