The mellow thrum of the Toyota Prius is to the streets of Ulaanbaatar what the screech of brakes and honk of horns is to New York: omnipresent. Beloved of eco-warriors worldwide, the Japanese car dominates the streets of Mongolia’s capital. If you stand on the corner of Sukhbaatar Square in the city centre, a good half of the passenger vehicles you see sailing past are Priuses. Dozens of garages cater exclusively to them. According to un trade data and The Economist’s estimates, some 60% of Mongolia’s car imports last year were hybrids.