Proton S70 R3 S1k race car teased – Is that the sound of an NA engine? News October 2, 2024 Arif Chan Back in February this year, Proton announced that it will enter the Sepang 1000km (S1k) endurance with its new sedan, the Proton S70. Now, Proton has released a teaser video of the Proton S70 R3 S1k racecar and ...