Car appreciation... the aesthetics, the engineering, etc

a concept car is generally a car manufacturer show-boating technologies.
a prototype is more of a work in progress or the early visions of a new model.

there hasn't been a recent ferrari 'concept' car that has made it into production.
(maybe the fxx, but it's a limited track use only car based on an enzo)

a bit of a fine line to be honest, for instance would you call this an concept or an prototype?

http://www.motortrend.com/future/concept_cars/112_0603_aston_martin_rapide_concept/index.html