Driving down to Orlando last weekend I saw again these signs on the Turnpike in sequential order telling a little story:

"He drives an old car..."
"Yet he goes through tolls"
"Like a Movie Star!"

It's an advertising campaign for the SunPass toll transmitter offered by the Turnpike/Expressway authority.  They also have signs about staying awake and driving safe.  Turns out these signs are an homage (if we're being nice) or a rip-off (if we're being mean) to the old "BurmaShave" advertising campaign popular in the 1920's through 1950's.  Burma Shave would place these seemingly witty messages along the major roads, with the punch line always being "BurmaShave!"

"Big Mistake"
"Many make"
"Rely on horn"
"Instead of "
"Brake"
"Burmashave!"

Of course Burmashave was advertising to the man on the go - portable shaving cream so he wouldn't be tied down by making that lather, and the pesky brush.  So the idea of placing the advertisement on the highway - where everyone was driving along quickly makes a lot of sense.  I suppose being able to just sail through the tollbooth without having to stop is very similar in that nature...

For more information on Burma Shave check out this great site: Burma Shave