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.