I found out quickly that the the way i rode didn't change -the same (moderate) intensity, just that it produced a slightly higher average as I climbed a little better. On the flat I found the bike happily cruising above the 25kph limit and as I slowed for a rise in the road the motor cuts in very subtly. On steep hills you can feel the motor respond to your effort. The level of assistance mirrors my effort quite intelligently so that if I am soft tapping away there is little extra but as I press harder as I reach a slope, up goes the power. Very clever and a very enjoyable ride. The bike is nicely made too.
I still came back feeling that I've been out for a ride. This promises to be a tool for exploring further afield and over hillier terrain without coming back feeling too beaten up.

Its proving expensive though. I went out with my wife. She on her hybrid, me on the Giant with the motor off. All was well until we got to a hill. "Switch it on" she said "i want to see what its like" Well I did, and lit off like a scalded cat! I could hear her laughing a hundred yards behind me! I waited and when we met it was "I want one"! Ah well!