On the way back I was able to get 48.2 ( I will attached it later). Did P&G. However it was really difficult as there were vehicles and some cases I had to go slow in order to maintain the glide (around 40 km/h). No A/c and outside temp was around 29 C (little hot). This was from Work place to home. However today was a public holiday (it is a working day for us). However this is only possible as I was along, no A/C and very less traffic. Also need high concentration and therefore difficult to get this in a longer stretch.
my best to date was a 660 mile trip from central NC to western NY thru the VA and WVA mountains. We averaged 47.9 MPGS for the entire trip running the AC with 90 degree temps outside. We maintained mostly 65 - 75MPH through most of the trip and used cruise control for most of the 10.5 hour trip