The claim that three rare Bicentennial Quarters are collectively worth nearly enough to purchase a special edition Mini Cooper worth $250,000 is highly improbable.
Bicentennial Quarters, as previously mentioned, were minted in large quantities and are not typically considered rare or valuable.
While it's possible for certain rare coins to be worth significant sums, values in the range of $250,000 each for Bicentennial Quarters would be unprecedented and highly unlikely.
Even if these coins had some unique variation or error that made them more desirable to collectors, it's improbable that three of them would collectively reach such a high valuation.
the value of a special edition Mini Cooper priced at $250,000 would likely far exceed the combined value of three rare coins, even if they were exceptionally valuable.
If you have coins that you believe may be valuable, it's advisable to seek a professional appraisal from a reputable numismatist or coin dealer to determine their true worth based on factors such as rarity, condition, and demand among collectors.