I regularly see people that i don’t know and that don’t even really look similar to anybody that i know, however, their face looks similar to or exactly like somebody i know. Upon closer inspection i will realise that they are not who i thought they were. This isn’t too concerning to me as i feel it is common for everyone, however this sometimes happens multiple times in a span of 15 minutes, on one distinct occasion even happening with 6 cars driving past me in a row, within 15 seconds. 
Does anyone else experience this/is this something i should be worried about? 
Thanks.