He's undoubtedly a top top driver but put him in anything less than the best car and while he might win the odd race, he wouldn't be World Champion. With Newey (Probably) going to Ferrari, Hamilton will undoubtedly win another one. It won't be next year though as they're still under the same regs but in either of the 2 years after that, I'd pretty much say it's nailed on. I then think he'll retire.