The Hot Wheels Shock Factor, a winged, off-road racer, was first released in 1992. There are nearly 20 variations, mostly with construction tires. This blue and yellow example from 1998 is interesting in that it is the latest (year of release) model in my blackwall collection and one of only a few that were cast in China.
Shock Factor features a driver cast into the plastic piece which fits between the metal base and the metal upper body. The plastic section allows for a fun two-tone color combination.