Horsepower isn't a good measure of how fast it takes to accelerate, that's the power to weight ratio. The Nissan Leaf does 0-60 in 11.5 seconds and has a 107hp drivetrain.

Unfortunately the range is around 1/4 of what you want. The battery pack retails for $5k, so let's say it costs another $15k for 400 mile total range (assuming nothing else changes, e.g. extra weight). Would you pay $50k for one with a 400 mile range?