Average acceleration is between 6-7 m/s^2 so technically your almost there haha. I wonder how much longer its going to take before a car can accelerate at the same rate as gravity.
Regardless, this is not an LS9, it's an LS7 (Chevy 7.0L) twin turbo. Whether it be a lotus or not, its a sick car with a ton of engineering. In order to break the record it must be a production car therefore it has to be treated as it's own entity I guess.