Hold on. I don't think he was going "so fast".
If you were merging at 65 mph and you said (I quote): "and I see a motorcycle, so I say, 'gee, let's watch out for him' ". Was the motorcycle speeding too?
Generally when you're merging with traffic, you are going slower as you have to speed up to merge. Even if we assume the max speed that the Talon was going (85 mph), you doing 65 is only a 20 mph difference. Yes, faster but not significantly. Again, that's assuming the max. If he was only going 75, then this is a mere 10 faster than you were going.
I don't see how he should be charged with vehicular manslaughter. Yes, he was speeding but I doubt he had any idea that his tires were on the edge of destruction. Nor do I think he happened to radio the chick in the SUV to say, "Hey babe, I'm about to wreck my car so why don't you take your seatbelt off for me?"

He was wrong for speeding and that's about it. The chick's critical condition/death is her own doing. It was her choice and her choice alone not to take the two seconds of her life to buckle a seatbelt. Moreover, I'm going to assume she's that much more irresponsible if she couldn't even make sure that the children in the rear were buckled. I send my prayers out to her and her family, but I'm not going to seek out the guy in the Talon and hope that he gets sued or thrown in jail for something he had no control over. That's just ridiculous.
-SAV