that's a bunch of crap.

you cant tell everyone what the next '57 chevy' is going to be. actually the '57 chevy was a mistake! it just happened to turn out that way.
short story: the '57 chevy was SUPPOSED to be the '58 design, but the '58 wasn't ready, so they basically rebodied a '56 and shoved it out the door for the '57 model year, and decided to wait till the next year to unveil their new design (quad headlights, new engines, etc.).
i think only
time will tell what the next classics will be -- but if haggerty or barret jackson wants to help BMW sell Minis (like they need help) go ahead.