You're obviously entitled to your own interpretation of the limited data we have. I just think, given the three articles I've read, it's much more likely to be suicide than murder. However, I do hope they do a thorough investigation. Things I'm interested in knowing are:

• who owned the gun and when was it purchased?
• does the gunpowder residue in the vehicle indicate that he was alone?
• where were the likely suspects at the time?

But at this point, I'm thinking ~80% suicide, 20% murder.