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Well, relatively speaking anyway. 133 miniature stallions churn away in the engine bay of Daihatsu's BOOM X4, faces planted in turbocharged feed-bags. Routed through a 5-speed gearbox, the power goes down via an AWD system. Total weight? Less than a metric ton. The hoons are screaming, Clarice. [Thanks to James for the tip.]

Daihatsu's BOOM X4 [Nihon Car & Bike]

Subaru Launches R1 Minicar in Japan [Internal]