What is the fine-grained topic of the following text: He had one last try in the hopeless BRM P207 in 1977 (failing, as had everyone else who drove it, to prequalify) before he took up a more successful place in the British Formula 1 championship, before he retired and directed his efforts towards what was clearly a major skill: sponsorship wheeling and dealing. Only return the topic.
A person's career shift from Formula 1 racing to sponsorship negotiation.