It doesn’t matter if you’re three, thirteen or thirty, men will never grow out of Hot Wheels cars. Hot Wheels cars will always be fun to play with even if you happen to be too “old” to have a sweet track to race them through. They’re even cooler now because Mattel saw fit to combine them with two other things we happen to love: radio controls and an iPhone app. Not only can you drive it with the standard two-stick setup on your iPhone, you can use the accelerometer (iPhone becomes the steering wheel), send it through a pre-determined circuit, or draw your own circuit. If you don’t have an iPhone, the carrying case/charger also doubles as a controller as well. The only thing you have to worry about is not losing them under the couch/desk because they’re so tiny.