This popular animated television  cartoon feat ured two Stone Age familie s, the Fl intstones a nd their neighb ors, th e Rubbles. Muc h of the humor was bas ed on its comic po rtrayals of m odern conveni ences, rei nterpret ed using Stone  Age &amp ;#39;technolog y.' Mo st notably wer e their cars , complete wit h absence o f floor boards to a llow the m to be &a mp;#39;foot-po wered.&a mp;#39;！