it was to buy pot. It’s not even illegal in every state any longer. Why would he suddenly think theres going to be violence involved? That transaction goes on thousands of times a day across the nation. Whatever sentence he had due is long since past.
No it was to STEAL pot.
The drugs are irrelevant. Substitute anything else and the story plays out the same way.
These guys were going to do a home invasion robbery and, not surprising, someone got killed.
Did he know before he lent them the car or not is the point.