Bamey bought a used car for his personal use from the A$-$Herts Car Rental System which regularly sold its used equipment at the end of its fiscal year. First National Bank of Springfield had previously obtained a perfected security interest in the car based upon its financing of A$-$Herts's automobiles. Upon A$-$Herts's failure to pay, First National is seeking to repossess the car from Barney. Does First National have an enforceable security interest in the car against Barney? Explain.