Yup! Too downbeat.
hows about: "Florida - vote early and often."
Too political. Remember these signs are on public highways. The messages should be both funny and quirky so as to grab the attention of drivers. Each electronic sign should have a separate message so the drivers have something to look forward to as they continue driving down the highway. The key here is to keep drivers ALERT.
But continue making messages suggestions. You'll get the hang of it.