"To learn more about how the Roadster could reach rally car-like acceleration figures, I spoke with Carnegie Mellon’s Venkat Viswanathan, a mechanical engineering assistant professor who works at the Wilton E. Scott Institute for Energy Innovation and focuses on next-generation battery technology. He’s also published studies on battery technology. He told me he thinks the 1.9-second figure actually seems reasonable." https://jalopnik.com/heres-what-a-battery-researcher-told-us-about-the-tesla-1820558723 Great little article that is a must read for those contemplating buying a new Roadster. The article fact checks Elon's claims. Here is an important quote that replies to those who say that the prototype car may not have the 200 KWh battery now and that Elon is basing the range on expected future battery technology: "The most interesting thing he said is that Tesla’s claimed battery capacity of 200 kWh isn’t just there to contribute to a higher cruising range, but it’s also an enabler for fast acceleration times". This means the prototype most probably have the 200 KWh battery capacity now!! Cheers Derek P.S. This is my first post, go easy on me.