The 2025 Audi E-Tron GT replaces the R8 supercar as the automaker’s halo model A new RS Audi E-Tron GT Performance variant joins the lineup with 912 hp The Audi E-Tron GT receives the Porsche Taycan’s upgraded 105-kwh battery With the Audi R8 no longer in production, the performance mantle at Audi Sport now lies with the 2025 E-Tron GT…