I was wondering if the proton was giving them design difficulty with driver development as far as making it come out in the right weight range. I suspect that they couldn't do it in proton because of the added density of the overmold material, so they had to change core material. Purely speculation, but it makes sense and they currently haven't been able to reduce weights by any appreciable amount in their other molds.
I'd love to see some less stable molds from them, but the more I throw what they already have and the more I think about the gyro tech, it may not make much sense to do it.
Also, the stamp for the Volt is absolutely lame. Doesn't seem to fit in any way with their other stamps, and it's so empty.