“To be that good, how he wins the races and how many he’s won, I think we didn’t expect [it] and definitely not at the age of 26," he told Sky Sports.
"He’ll never get tired of the racing. I think he will continue until 40, until 45, but it all depends on the small things.”
Verstappen opens up on Abu Dhabi showdown
The dominant Dutchman's first world title was, of course, won at the expense of Hamilton as the Brit chased his record eighth world title.
After an almighty championship battle, the two drivers entered the last race of the season level on points.
Perhaps unfairly given how hard both drivers had fought throughout the year, the end result was marred by controversy, but Verstappen ended up winning the title with a stunning last lap overtake on Hamilton.
Now, Verstappen's father has revealed quite how he felt watching his son take victory.
“You didn’t even see it, I had goosebumps," he said. "Everybody was really nervous. I think my heart rate was up the whole race and I think after the race, everything fell off your shoulders."
Verstappen and Red Bull will now be looking ahead to the highly anticipated Las Vegas Grand Prix, where the Austrian team can secure their first ever 1-2 finish in the drivers' championship.
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