There are dozens of studies with similar scopes and results. It’s obvious: Car drivers do not care about cyclists and many would prefer them gone.
Just look at some driver’s attitude about climate protests - here’s a sample from comments online:
There are humans who won’t be missed. Especially not terrorists [people blockading streets]. Therefore: Full throttle.
Simply let a semi roll over them. Those pests must be gone… preferably backwards, it’s easier to clean the underride guard.
Why “kill”? It’s self defence.
Those aren’t “humans”, they’re criminals making everyone very very angry. Kill them all, there’s too many people on the planet anyway it would help the climate too.