Hi Steve,
Thanks for the advice, yes first hybrid too - coming from a Honda Accord 2.4 Auto.
On a recent trip to the US I took a Toyota Prius cab. On the motorway, the driver, rather than just keeping the throttle constant, he pretty much did just that, accelerating to a bit more speed than needed, then easing off, then accelerating again and so on.
I have heard of that technique before, but it is something I consider unconftable - so I will try any other trick in the book before resorting to that.
Breaking early is something that I already did before - with the hybrid now, I always try to keep the gauge in the "charge" section of the power meter for a as long as possible.
However, to gain speed, I always used gentle acceleration to speed, it is somethirg that I have to try with the NX, if accelerating sharply and then easing off but keeping speed gets better results (I have heard that too).
Dom.