It's a (not really) cool story I suppose. SierraEx (the commissioner) and I both run a Spitfire blog, and a Lyra blog, so when he commissioned me, took my design for Spitfire, and his filly Lyra! :> So that's how this blessed thing came to be.
First: THIS IS AMAZING! If I could fly, I'd totally give everyone/everypony rides! XD Second: I remember seeing this picture somewhere a couple of minutes ago, but I couldn't find a source link. Hmm..... Damn my terrible memory XD