While it was the temporary livery that got the most attention yesterday as Red Bull not only took the wraps off its 2018 contender but sent Daniel Ricciardo out to play with it, it was the engine powering the car that held Helmut Marko's attention. While nothing has been officially announced by either party, it is widely thought that Renault will no longer supply engines to Red Bull from the end of this season, leaving the Austrian outfit with severely limited options. The successive title wins seem a lifetime ago, and while the hybrid formula introduced in 2014 has seen a deterioration in the relationship between Red Bull and Renault, even during the good times it was never the most...
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