While Hamilton won last year's Drivers' Championship title with McLaren, Vettel, at the other end of the grid, was making a name for himself with Toro Rosso.
The German driver clinched both pole position and the victory at the 2008 Italian GP, pulling off what many believed no Toro Rosso driver would ever do.
This year, though, Vettel is off to Red Bull with Hamilton remaining at McLaren. However, if Ecclestone had his own way F1's two young stars would be up against each other in the same machinery in a battle royal.
"Young Vettel is fantastic. I think he is super talented and ballsy," he told the Daily Telegraph.
"It would be interesting if we could see him in the same car as Lewis Hamilton. Just as it would have been to see (Ayrton) Senna and (Michael) Schumacher in the same car."