Hot Wheels Planet Micro UnXplained Series W/Bonus Double Play Pack UFO's is a limited edition special edition diecast car set produced by Mattel in 1998. The set includes a multi-colored Hot Wheels car in 1:80 scale from the HOT WHEELS PLANET MICROS series, along with a bonus pack of two UFO toys. The car features a military theme and is unopened in its original box.