Why wait for ever........
You can't beat driving around in a new GS430 now!
Although I have picked up my first speeding ticket in 12 years, erm... "testing" motorway cruise performance!
As for fuel economy, the gauge seems to have settled at circa 18-19 mpg on varied local/urban/motorway driving, at the end of the day if fuel economy is what sways it for you then perhaps you need a different smaller car.....
Just my couple of pence worth :D
Having just shelled out £47K on the GS430 the thought of a more economical version of the same car I already have is not something I'm going to lose sleep over..... and getting me to 60 a fraction quicker is not really a big deal, this one is sub 6 seconds if you really want to push your foot hard down, plenty good enough as some local BMW owners will testify to.... :winky: