A van is painted in bright colored lettering advertising floats, boogie boards, umbrellas, chairs, and surfboards for rent.
The van is advertising merchandise used at the beach.
A van that is painted to show off the products of the company is a great advertising tactic, as it also brings the business to the people, and because the beach is usually not a place for cars it would be great to be near a beach, selling items that you could use at a beach, such as floats, boogie boards, umbrellas, chairs, and surfboards.
(-x)
(-x)