Detroit’s music has always driven across racial and genre boundaries. But when a longstanding garage-rock band with a black frontman loads its album with covers of Euro-inspired Motor City techno classics, galaxies implode. The Dirtbombs open in the Eighties, psychedelicizing urban-wasteland sci-fi paranoia from Cybotron, powerchording Inner City’s electro-soul optimism, and nailing the Italo-trash sleaze of A Number Of Names’ “Sharevari.” Eventually they stretch Carl Craig’s 1992 “Bug In the Bass Bin” into a 21-minute space-jazz endurance test. At record’s end, singer Mick Collins composes his own Japanese factory noise. And appropriately, three songs concern cars.