Power Question for BrianG, or other who may know

[TexasSP]

I am trying to figure how much horsepower/watts it will take to sustain 70 mph in an e-maxx. Anyway, it's something I got myself too deep into and need some more experienced help in figuring out. I am guessing that 2000 watts seems reasonable, but I am not sure.

Also, I am not talking acceleration to 70 mph but 70 mph sustained.

The main thing is that all this got started because I was challenged that under sustained load nimh cells out perform lipo. I don't see how as this is not my experience but anyway.

Thanks.