Drivers, get ready to mash the throttle, ‘cause this DIY is revved to go! Grab some art supplies and build a stadium that can withstand the power of Monster Jam racing. Design it the way you want so your kids can drive it like a pro. Let’s Get Started! Use a cardboard box big enough for the track you want to design. Parents, cut the sides of the box on an angle. Draw and paint the look you want for your arena. Is it a sunny day or is nighttime racing on the schedule? Paint the sky any way you…