Or perhaps a facsimile V-twin in carbon fiber, devoid of innards, and an electric motor amidships, plus synthetic piston-engine glorious sounds pumped trough barrio-blaster speakers electronically tied to the engine for authentic effects. Elegant solution to an otherwise vexing problem.
That is similar to mini cooper noise generation in the intake and maybe the exhaust. Currently nobody laughs at the M3W but the faux engine what generate at least laughs.