How fast could the new gen6 nascars go if they didnt have restrictor plates?

going guess,
until it.
if @ speeds of cars on big
track, no plate, pocono, same 10 years
ago, last time raced before new pavement.
same true michigan. ~190 10 years ago, ~190 today.
unrestricted, on big tracks, cars have not increased dramatically.

in 2004 rusty went 216 @ talladega, no plate in test.
think guesses in 220+ range, little optimistic,
given other "speed tracks", have not seen significant changes
in same timeframe..

and faster when didnt have restrictor plates?

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