This link gives some idea of the raw torque / power available with modern electric systems; albeit in short bursts. I believe the batteries will do five runs before recharging.
http://uk.youtube.com/watch?v=fHtAkM...eature=related
And no carb icing! :ok
Here's another, even more impressive clip.
http://uk.youtube.com/watch?v=-Ev72ppww7Q&NR=1
Note that the noise is from the adjacent, slower machine; you can hear it run out of gears and power! The times at the top of the tote board are for 1/4 of a mile, the speed below.