When I was a kid growing up, one of the most common phrases we would hear while watching toy manufacturer's commercials on the Saturday morning cartoon shows was "Be the first on your block to collect the whole set!"
Older kids would have seen that phrase a million times in the ads in comic books.
So, for mid-'80s inexpensive mid-engine sports/sporty cars, right now for about $10-15,000, you could "collect the whole set:"
X1/9
Fiero
MR2
