Cars are lumps of metal, plastic and glass. As an object you cannot use the idea of trust wrt actions.
Can we stop using car when we should be using terms for the human operator of the car. Cars don't kill, people driving them do!
In the recent thread it was a cyclist that killed a pedestrian not the bicycle. In similar threads involving cars it is the car that killed them. There's no parity in description there where in all fairness there should be.
Either bicycles and cars kill or cyclists and motorists. If the OP wants to make more sense perhaps rephrase things along these lines, namely a human does the action the cycle or car is just the tool to do it in or on.