Not all older cars do. Especially pre 70s oil crisis cars. Pretty much anything made stateside pre 1975 (the year Canada switched to metric) was mostly sold in the States and Canada and there was minimal sharing of parts between production in the US and in other countries. There was really no reason to include KPH on them so they didn't, and even reproduction parts for the cars that managed to become classics tend not to include KPH unless it's on digital gauges.