It is not a strange occurrence. I tried to hit cars from the bus stop when I was small once, and my 6 year old managed to hit a bakkie with his kettie in Ais Ais once

. And you are talking about educated people! So less educated people might just do it more freely.
An interesting Australian study on why cyclists get hit by cars found that car drivers don't regard cyclists as people. Car drivers see cyclists as insects, and cyclists are more likely to get hit. So bikes are buzzing beetles, if I can use the same analogy:
Motorists who try to run cyclists off the road may be acting badly because they don't think the riders are completely human. ... The researchers chose the insect-to-human scale, they said, because of the number of popular slurs against cyclists that relate to insects.Mar 29, 2019
Why do drivers endanger cyclists? Because they see them as insects
https://www.timeslive.co.za/.../2019-03-29-why-do-drivers-endanger-cyclists-because-th...