What car of the past would you most relate to Ireland. Obviously we could go by car sales "if anyone found that info easily". For me opel stands out - didn't they sponsor the Irish football team during big Jacks tenure. Then the cliche that loads of farmers drove a Toyota. But for you what car back in the day stands out as been popular or they were everywhere.
I'll say an opel kadett
Or a Toyota carina
I know Delorean was built up North - but it was hardly seen everywhere or popular