This is an interesting symbol arrangement in the middle of the paid list. The yellow truck ranks second on the list and returns 5,000 points. Green tracks and fuel can provide a reasonable victory of 1000 points if five appear on the Highway Kings Pro reel. The red truck is a wild symbol in the game, and the exhaust of the truck is used as a scatter symbol. When five reels appear, the scatter symbol is a reasonable sum of 100 points.
The wild symbol is very powerful because it helps to replace every other symbol on the reel. This can provide an important winning combination. More importantly, it has also doubled its success. Crucially, this wild symbol only appears on the middle three reels of the highway KingsPro. Scattered symbols are equally powerful because they can only appear on reels to create a specific order of winning combinations.