> over 50 gigawatt-hours
That can't be right.
2300 kg * sqr(410000/3600) * 0.5 = 14893006.000 Joules
14893006J * 0.000277778 = 4136.9 watt hours
Edit: out of curiousity, in order to have a kinetic energy of 50GWh, it would need a speed of 1424260 km/h (884994 mph)