China’s exports of electric trucks to other Asian countries have spiked, adding to a surge in domestic sales as higher fuel costs as a result of the Iran war accelerate regional electrification, Reuters reports.

China’s rapid adoption of electric trucks (e-trucks), from lighter vehicles to tractor-trailers, has partially shielded the world’s biggest auto market from the impact of the conflict. Now other countries are scrambling to follow.

In the four months after the US and Israel started the war on Iran in February, China’s exports of heavy e-trucks more than doubled from the same period last year to 16,823 vehicles.

Half went to South and Southeast Asia, with shipments to South Asia up more than fivefold and to Southeast Asia nearly tripling.