It seems Toyota is ready to take the reigns and develop its next big sports car entirely in-house. Speaking with Toyota Australia’s chief of marketing and sales, Sean Hanley down yonder at Drive learned that the company’s next big sports car could be developed without any outside help.
This would be a major change to Toyota’s current sports car offerings. The affordable and fun GR86 is a byproduct of a collaboration with Subaru. The Supra happened with help from BMW.
But now that Toyota’s Gazoo Racing performance division had some time to evolve, they’re confident they can take on their next big sports car all by themselves.
Building their own sports cars is “exactly what GR is about”

Toyota’s Gazoo Racing program has been around since 1975. However, it was only within the last decade that the Japanese automaker began utilizing it as a marketing tool for its sports car revivals.
The fifth-generation Supra rebirth, despite being co-developed with BMW, is sold as the “GR Supra.” The “GR” essentially designates any sporty or high-performance Toyota, including the GR86 and even the GR Corolla.