DID I KNOCKED HIS CAR???

Yesterday when i wanna pick up my
youngest brother from his tuition at night,
u know wat......
i knocked a uncle's car.....
firstly i actually dun realise that i had bang his
car coz i can't hear any sound and my car is quite far from his car....
but my bro said i have knocked his car....
before my bro said that to me coz i thought that
i didn't knocked his car so i went to the newspaper stall
i stopped there.
Then suddenly he drove n stopped beside my car
so i thought he also wanna to buy newspaper....
who knows......haizzzz
he chased me from there to the newspaper stall....
the he came down from his car checking whether his car,
then i was just looking at him, dunno wat to do.
He and his wife looking at me with their fierce face....
damn scary.
Then for a while they just drove off without asking anything from me....
When i reached home, then i checked my car....
no spoilt , nothing or any scratch.....
so as a conclusion....
DID I KNOCKED HIS CAR????