For those who want a challenging Gameboy racing game from a great developer, buy this game and support them! Hoonigans is a great game to play, I just wish there were more levels to enjoy. I like how you need to master the burnout to get more points in the cone trials. I beat all but one level the city time trial. I think it should be maybe 1-2 seconds more for gold to make it more achievable. Other than that, the difficulty of the game is well balanced. If you looking to make another top down racing game, I suggest you make a game based upon the Need for Speed: Most Wanted police chases in a open world or a top down wipeout like Formula V.
P.S. There seems to be a glitch in the game that lets you "drift" off the map and broke the game. It happens when I brake from speeding while turning or when pressing a+b buttons too fast.