Some Highway Kings icons combine three or more rewards and bonuses, but if only one or two appear, there are other people who can reward you! For example, the red truck is one of the most coveted and generous symbols in the game, with only one red truck on the reel paying for two points.
If you are chasing huge amounts of money in the game - let's face it, who isn't it? - Trucks are a sign that you need to pay close attention to. Matching combinations with other symbols will also yield some useful wins and impressive bonuses.