Someone accidentally hitting someone with a car and someone intentionally doing so are very different things. The key is what evidence you have to show one or the other. If there is evidence someone hired a hitman then I don’t see how that can be muddied. The person intended to murder someone.

I’d also like to see a source on your claim about consciousness. I’m not sure how decisions and actions can just come to us and then we can purposely add a motivation afterward (but not before?).