An engine that runs on any fuel? VCs plunk money into the concept

Transonic Combustion--which is working on engine components that will let cars run on gas, biodiesel, ethanol, vegetable oils or other fuels--announced on Tuesday that it has raised a second round of funding.

Investors in both rounds are the same--Khosla Ventures, Rustic Canyon and Venrock.

The somewhat secretive company has come ...

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