Which horse would you be?

[GenuineRisk]

Okay, the beautiful MMSC, with her excellent taste in music, is so good at starting threads like these, that she's inspired me to try one. Apologies if one like this has been done before:

If you were a racehorse, past or present, who would you be? Not who you'd want to be, but who you think you would be-- for example, if I were a racehorse, I'd be Megahertz, because like her, I'm little, and also like her I tend to hang back until you think no way I'll get the job done and then come through at the very last moment. In racing they call it "closing." In the rest of the world they call it "procrastinating."

So, based on your personality, who would you be?