I need your honest opinions about something.

The backstory: I grew up in a very dysfunctional home. My parents divorced when I was four. My dad was emotionally and physically abusive throughout my childhood, and I have PTSD mostly as a result of his treatment. My younger brother was the golden child and I was the scapegoat. At my mom's house, my mom and younger brother are in a narcissist/co dependent relationship, with my younger brother as the narcissist. My dad taught him to devalue women, and like I was devalued, my younger brother devalues our mom. I have worked extremely hard for the past several years to get out, and I am out. I am totally self-sufficient, while my younger brother relies on our mom for everything. He's 20, has never had a job, and has had everything given to him on a silver platter because he begs and whines and demands until he gets his way. I chose to stop contacting my dad when I turned 18, and haven't spoken to him in 4 and a half years.

The situation: My dad contacted my brother today, and went on and on about how he doesn't have a lot of time left. He told my brother that he will inherit his very expensive motorcycle and I will inherit his cheap old truck. My younger brother then tried to insist that I give him the truck because he doesn't have a reliable car (he has purchased 3 cars with our mom's money...all have been junk), and I don't need it because I do have a car that works and is reliable (that I purchased with my own money). When I suggested he sell the motorcycle instead, he said he wouldn't do that. When I told him I wouldn't just give him the car, he got angry at me and tried to guilt trip me.

Am I in the wrong in insisting that I take the truck and sell it so I have some spare money, instead of giving it to him?