just enjoy it as it is.
I saw a kid a few days back riding one of there (in red),.. was pretty funny how he was trying to look like a bad@ss biker and when it came time to turn he lammed on the front brakes which caused his bike to slip and fall.
these things coudl be made to look (and sound better) but the fact that they sound worse than a lawnmower doen't make them too desirable in my eyes.
enjoy it for a while, save up and buy a real bike later on (Y)