Brazil will be the last race so far for the Williams-Renault combination. Williams returning to Renault engines two years ago felt so nostalgic, when I was a kid, Williams was winning titles with Renault engines. That's why it was probably my favourite chassis-engine combination, andit was nice to see them returning to Renault engines two years ago, unfortunately that partnership will end after this season.
Williams-Mercedes doesn't sound so good. McLaren-Mercedes is one of my favourite combinations very much because of Häkkinen and Räikkönen at McLaren. But given Mercedes feels like a company that needs to make their own chassis, that's what they did already in the 50s. And that's why my favourite of McLaren's engine partners has been Honda, and it's cool to get that combination back in 2015.
And I always associate Tyrrell and Lotus strongly with Ford.
But what are your favourite chassis-engine combinations?