Suggestion to support green motoring
Back in 2000 I used one of the very early phone based versions of Tomtom and it was possible to down load various items such where all your branches of your favourite doughnut shop, hotel specific brand of petrol were.
I currently use Tomtom go on Android whilst I can display the nearest petrol station I cannot display the nearest supplier of Lpg or the nearest charging point for an electric car.
Even if this facility is not in the main product they should be a downloadable extras even it it is for a small charge. I drove earlier this week from Margate to Scotland and only found one LPG refuelling point and that was more but luck than anything else.