Rear turning light (special)

I remember in late 70, one model of car have a special electronic device on theirs turning light (rear) flash in sequence from left to right or right to left.
I remember was 3 set of light....

my question is:

witch model of car is it? what year ?

Thanks

I remember in late 70, one model of car have a special electronic device on theirs turning light (rear) flash in sequence from left to right or right to left.
I remember was 3 set of light....

my question is:

witch model of car is it? what year ?

Thanks

Sequential turn signals
http://en.wikipedia.org/wiki/Automotive_lighting

67-69 cougar also use them