|1.||convertable yellow saab|
(n.) a product that could only be made successfully by one company (usually with a reputation in the market for such things), that would trounce any imitations of it, unless these imitations had near ten times the budget.
A convertable yellow saab is a good example.
The Ferrari 250 GTO was also a good example. The GT40 cost ten times a 250 gto.