Toyota Motor Corp. has begun negotiations aimed at engaging in a joint research project with major oil company BP Plc., Nikkei Business has learned. The project concerns biofuels, alternative fuels derived from plant matter. By entering into a new tie-up with BP, Toyota hopes to conduct research into matters such as the economic viability of biofuels, their effect on vehicles, and possible raw materials. Talks are currently focused on narrowing down the research interests. BP already operates a biofuel refinery in partnership with European companies, and is working to commercialize biofuels.