[buccaneer81]

I read the basis was a 1956 Lincoln Futura concept car.

[RegulatorCountry]

Well, 56 and Lincoln. Could be that the starting point for both the concept car and the Batmobile was the Premier convertible of the same year. I sort of doubt they butchered a concept car for it.

[Secret Agent Man]

It was the Futura. You are correct.