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Originally Posted by Scott R
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I HAD to look this one up. But that sure looks like a one barrel carburetor in the foreground:
The Times Journal - Russell Springs, Kentucky
Tucker initially tried to develop an innovative engine. It was a 589 cubic inches flat six cylinder with, Fuel injection and overhead valves operated by oil pressure rather than a camshaft. An oil pressure distributor was mounted in line with the ignition distributor and delivered appropriately timed direct oil pressure to open each valve at the proper interval. This unique engine was designed to idle at 100 rpm and cruise at 250-1200 rpm through the use of direct drive torque converters on each driving wheel instead of a transmission. These features would have been auto industry firsts in 1948, but as engine development proceeded, problems appeared. The 589 engine was installed only in the test chassis and the first prototype.