Like you, I think it was a tragic accident waiting to happen. It will be interesting to see if the inquest throws up anything new.

I've forgotten - wasn't there another vehicle involved? .. a particular vehicle that might be accused of being the prime instigator of the accident (aside from all the pursuing paparazi)?
Was that vehicle and driver ever found?

Isn't the driver of that vehicle the prime suspect (aside from whoever may have hired him)?
I can understand the driver would be scared to death of ever stepping forward, but it might help to clear up "conspiracy theories".

" Does anyone really believe that Diana was murdered?"
Well, lets think of it this way, if you were going to set someone up for a "hit" and make it look like an accident - doesn't an auto accident seem pretty unreliable?
I think they did a lot of boating? I would have thought a boating accident (explosion in the engine room, etc) might have had a higher probability of causing death. Assasins would have all sorts of more reliable ways of taking one or both out and still make it look like an accident.

So, no - I don't think Princess Di was murdered; peope survive horrendous auto accidents quite often.
But, I wish they had "all" the drivers from that night so the loose ends could be tied up.