Shortcomings of sport bikes

So yesterday I wanted to go to the store.  I have resolved to ride my bike as much as possible to save miles and gas on the GX470.  I started to make arrangements, but then I realized that it was impractical to buy liquor on a sport bike.  Yes, I could have put it in a back pack, but who wants to wear a back pack unless absolutely necessary? I could strap a bottle down to the back seat, but multiple bottles wold bang together.  I guess I need some hardcases or bags, but how would that look on a sport bike? So I took the SUV...