When you flash the cash it's over. Bentley's, yachts etc etc are all BIG middle fingers to the Feds.

Daring the FBI to arrest you.

And the Feds LOVE a dare.

If these morons wrapped up the cash in a couple of suitcases and sat on it in a safety deposit box for 10yrs maybe this would've ended differently. But nobody ever accused these two of being too smart.