This hoverboard doesn't have any unlockable upgrades.
The Hot Rod is a hoverboard which was first introduced in Subway Surfers World Tour: Miami. Its special power is to speed up, much like the Daredevil hoverboard. However, this board is not a special edition hoverboard. Its appearance is one of the most deluxe of all the other hoverboards, with its very own engine and a flame design on the front.