What a fabulous creation and render!

I think a coin that is only mineable on CUDA devices would not really find a large enough fanbase to be listed on any exchanges. Cuda isn't as sexy as a trash talking Doge or as a gay fish ("Coinye"). The Cudacoin surely would appease some (may be a lot of) miners, but miners aren't necessarily coin users who create a demand for the coin. You need a userbase that is willing to purchase the mined supply of coins.

Christian