So I know all of you were waiting with baited breath, but my lazy ass finally got around to drinking my parking lot speed aged Cuvée René.
Both bottles purchased at the same location, same bottling code. One left in my car in North Carolina(ball sweat capital of the world) for a week. Both chilled for a week and the brought up to a proper serving temp. Did the side by side blind, although there was a little giveaway when one of the corks shot out like a rocket only 30 seconds after I uncapped it.
They look identical, but both were way over carbonated, one more than the other. The speed aged bottle had a deeper earthiness to the aroma, while the regular bottle was more light citrus. Taste was identical, although hard to tell because both bottles were overcarbed.
So ya...no significant difference. They are just tasty...and now I am enjoying them with cheese.
tl;dr
Cuvée René and cheese are tasty