This hoverboard doesn't have any unlockable upgrades.
Roller is the twenty-fifth limited hoverboard in Subway Surfers. It is a limited hoverboard exclusive to Subway Surfers World Tour: Las Vegas and re-released in Las Vegas 2016. Like any other hoverboard, it protects you from crashing for 30 seconds. When crashed, the hoverboard will explode and need to recharge for a few seconds before using again. The board has the form of a gold and white limousine. Like most of others limited hoverboards, it costs 50,000.