I had read that Telsa revised
I had read that Telsa revised it's acceleration estimate to be 2.1 seconds to 60MPH, but 1.9 with the optional Space X package. The Space X package is rumored to be a compressed air tank in place of the rear seats and 10 cold air rocket thrusters that help in acceleration, braking, and cornering. Sound like Science fiction? Yep, but so would the idea of a 7 passenger family sedan that weighs almost 5000lbs getting to 60MPH in 2.3 seconds! The other impressive specs of the upcoming Tesla Roadster are an 8.8 second 1/4 mile time because it is a HUGE feat to have today's multi-million dollar hypercars get through the 1/4 mile in under 10 seconds (the quickest Tesla Model S does it in 10.5 sec today), so shaving another second off of that acceleration time is astounding. Lastly is the proposed 200kWh Roadster battery that achieves that 620 mile EV range. Sure, Tesla would have no problem getting 600+ miles range for a 200kWH battery, seeing that they are getting an impressive 373 miles from their 100kWH battery in the Model S. The amazing part will be having a 200kWH battery pack that doesn't add 3000lbs to the Roadster, and fits in the relatively small sports car body. Even though the weight and size of a 200kWH battery that is twice the size of the Models S's battery pack would be tolerable in the Tesla Semi, both the great weight and size of an immense battery pack would be unacceptable in a hypercar. So I think that Tesla will unveil an enhanced battery technology (or two) that will allow them to reach their outlandish performance and price goals for the Roadster.