Synthetic fuels would be great for all the existing stuff, but not sure where you're getting EV sales are down in Europe.
New plug-in car registrations:
BEVs: *212,000 (up 57% year-over-year) and 17% share PHEVs: *100,000 (up 17% year-over-year) and 8% share Total: 311,897 (up 42% year-over-year) and 25% share
From https://insideevs.com/news/680428/europe-plugin-car-sales-june2023/
Synthetic fuels would be great for all the existing stuff, but not sure where you're getting EV sales are down in Europe.
New plug-in car registrations:
From https://insideevs.com/news/680428/europe-plugin-car-sales-june2023/