No doubt the Ford Transit Custom is a bit small for our American RV preferences, but Ford’s approach to the plug-in hybrid mentioned in article is very interesting and may reveal future direction for larger vehicles.
The Custom can go 50km or 31 miles all-electric on batteries, and 310 miles using the range extending generator. Once fuel tank is refilled, I’d assume you can keep going another ~300 miles.
The onboard battery capacity should be plenty to allow a small camper to be all electric, including air conditioning, heat, entertainment, fridge, cooking, etc.
https://www.parkers.co.uk/vans-picku...lug-in-hybrid/