David Letterman was livid at John McCain’s no-show last night.

GOP Prez candidate John McCain abruptly cancelled his scheduled appearance on The Late Show after he requested a "time-out" to deal with the nation’s financial crisis.

"This doesn’t smell right," Letterman fumed after receiving the cancellation call. "This is not the way a tested hero behaves. Somebody’s putting something in his Metamucil."

McCain was allegedly flying to Washington to deal with money matters but Letterman showed a TV feed for J-Mac getting made up for an appearance on CBS Evening News with Katie Couric.

"Doesn’t seem to be racing to the airport, does he?" Dave quipped.

As J-Mac rapped with Katie C., Dave shouted at the screen, "Hey, John, I’ve got a question – Do you need a ride to the airport?"

Later, Dave revealed breaking news, "We’re told now that the senator has concluded his interview with Katie Couric and he’s now on Rachael Ray‘s show making veal piccata!"