Bought my 5 year old RX400h six weeks ago and mainly got a 40 mile round trip to work most days, with a few shorter trips too.
Work commute is mainly A roads, averaging 50-60 mph., with the inevitable roundabout queues at the end. Currently have eased the mpg up from 29.5 showing when I bought the car to 32.5 - and happy with the way it's going so far.