Duffy's Dozen was a prime-time animated sitcom pitched by Hanna-Barbera in 1971. Although it didn't sell, some elements of it were reused in The Amazing Chan and the Chan Clan.
Summary[]
The Duffys, a couple with twelve adopted children and a pet sheepdog, travel cross country on sight-seeing vacations in a shape-shifting recreational vehicle, somewhat like the Convert-a-Car in Wacky Races.
Voice Cast[]
Video[]
Duffy's dozen
Pilot