ADDENDUM: I didn't state that very clearly. Start with a loan of $7200, split over 3 years of monthly payments it's $200/month. Go with the rate I actually have (1.49%) and the loan payment is $204.63/month. It works out to $166.59 in interest spent over those 36 months. I found a 3 year CD with an APY of 0.91%. If you invest that same $7200 it will be worth $7398.35 after the 3 year period. A profit of about $32. And that's with an ordinary CD, less conservative investments have a much higher potential yield. Of course you pay tax on those earnings, so the CD may not actually be profitable in this scenario, but a higher yield account almost certainly would be.

[1] Missed the edit window by this much.