They would never make it past Seattle. Their spearhead would hit the first set of Starbucks defense caffes and they would be stuck there drinking coffee. Then two hours later, the coffee would drop them and they would loose their will to march. Plus they would be out of money.
Tim Hortons is already preparing all the coffee and donuts we need for the invasion... Starbucks doesn't have a chance to stop us... HA! Tim Hortons recently had the Roll'up'the'rim'to'Win contest to provide enough mini-vans for the invasion force. It's only a matter of time.
We've also been spiking all the bottles of Labatts Blue and Molson Canadian sent south of the border with water taken from behind a beaver-dam. If you've been interested in beaver lately it's obviously already taking effect....

I'm a little worried about our chances against Jack in the Box though... that pointy nose guy looks sharp and might hold us up.
-Soda
The Assassins.