Starbucks drink that has coffee but not the taste?

Okay, so Starbucks is one of my favorite places to get a drink, and usually I get a Chai or a Strawberry and Creme Frapp. However, I'm needing a drink that has more caffeine in it, so I can stay up on my six hour drive tomorrow night. I really hate the taste of coffee, but I know there are drinks out there that don't have a coffee taste. Whats a drink that has coffee in it, without the taste?