Such a switch would see Hamilton and Vettel, the two best drivers of their generation, join forces at Mercedes in an equally mouth-watering and explosive partnership, that could rival the toxicity of Hamilton's inter-team battle with Nico Rosberg.
"The auto felt strong straight out of the box", said Hamilton, who has won four races this season. He has now equalled Michael Schumacher's all-time record in the process. "Seb put a great fight on", said Hamilton after his victory.
"I'm not happy with myself, not happy with the vehicle, so I think we have a little bit to come", said the four-time former world champion who leads the title race ahead of Hamilton by 14 points.
"I'm always game to race whoever it is", he said.
He also holds the record for the most Grand Prix wins (91), the most pole positions (68) until today, the most fastest laps (77) and the most races won in a single season (13).
And he added: "I feel honoured to be up there with Michael Schumacher as a pole placeman".
Volkswagen T-ROC finally revealed
Oddly, though, for all VW's lip service to the future being electrified, it has gone entirely old-school with the T-Roc's engines. Despite being small, the T-Roc boasts an impressive boot capacity of 445 litres with the back seats seating passengers.
Force India are now fourth in the championship after 11 races, more than 200 points behind champions Mercedes and Ferrari.
"We had some trouble setting up the auto and I didn't feel too comfortable in the beginning".
"I think and pray for Michael all the time".
Without this edge, Vettel could not find a way through, with Hamilton pulling clear to take his fifth win of the season and cut the gap at the top of the drivers' championship down to just seven points. "I want it just as much if not more than anyone else".
"It works [with Valtteri] so I don't think any of the bosses or any individual in the team is unhappy with what is now in place so I find it hard to believe they would change that".
Vettel said: "I love this team, I love the people working for this brand".
The Briton lapped the Spa-Francorchamps circuit in one minute 42.553 seconds, the fastest-ever around the 7-kilometer long circuit, beating his Ferrari championship rival Sebastian Vettel by 0.242 seconds. "I'm in no hurry, I know that I am in a good position", he said. "On my side, in the first 10 races there were probably a couple of races where performance could have been better and I want these next nine races to be 10s".