Downhill is for recovery.
On my current ride it is where I work the hardest! Slowly pedaling up the next hill is where I rest...
I have a goal, in life you have to have ambition! Under the seat of my trike I want a battery that provides about 3.5 kWh (4 x 44.4v 21 Ah). I figure that using 10 Wh/km I can get about 250 reasonably fast km out of it with some to spare just in case. I will wrap the trike in something vaguely aerodynamic to help reach the goal. Currently I am capable of 5.6 Wh/km on an un-faired upright pedelec.
See post #2 of this thread.