Galoob released the Micro
Machines line of toys in the mid 1980's, and continued
manufacturing them long after. The Micro Machines were
smaller versions of Matchbox or Hot Wheels vehicles, typically
bundled with some type of play set (they were about 1/3rd the
size of a typical Matchbox car).
The Micro Machines were not
relegated to cars and trucks only. There were tanks,
boats, airplanes, motorcycles, and even themed sets like monster
trucks, Star Trek, and Star Wars. Many sets came with
little action figures as well. Some of you may have owned
the color changing versions, as well as the "private eyes"
version, that allowed you to peak inside.