"Didn't I tell you to wear well-fitted shoes and socks when you run the Marathon?" said Tom blisteringly.

or

"Now look what's happened. Didn't I tell you not to attempt to decode those messages by yourself?" said Tom blisteringly.

or

"Never did find out what the coded messages said, did you?" said Tim enigmatically.

and

"I just ran a load of contraband past the border guards!" said Tom smugly.

(Edit: someone should have fun with "automatically," too - alluding to the car, or even to the restaurant that opened the door and gave food when you put nickels in the slot. Haven't time to do it myself at the moment, unfortunately.)