Probably more mobilization, people in the big cities are probably also seeming to be more worried so if even rumors of it start they may actually try to leave. For now from what I’ve seen and heard, they didn’t feel like they were involved.
You can cut vegetable oil with ethanol for use in an old diesel engine just fine, 10-20% is fine. Old diesels will run on anything that doesn’t self-ignite too quickly.
I live in a poorly insulated apartment. It’s very cold in winter and heating it to 19°C all the time would cost around 500€ a month.
The problem is the choice of materials and the designs… no good shade against the sun (I have shutters and that helps a bit), concrete walls that give off tons of heat for days (impossible to cool by airing out at dawn after 3 days of intense heat during the day), no provision for AC or proper ventilation (it’s built on top of the foundations from an old farm with a nice cellar it could have natural ventilation from there chilling the living spaces).
I don’t see how France has much hope. Maybe compared to the UK it’s better but it’s headed the same way…