Hi Apologies if answered before although i couldn't find an exact response. Looking to purchase a P300e and personally would do a number of trips per month of around 250 miles return, with no intent on charging until back home. What actually happens, as presuming the charge depletes over the journey and you are left just with the ICE. Does performance degrade? what is the range of the ICE before refueling? and the dreaded question on MPG? Answers very welcome. Average speed 80 on the motorway.