British planemakers, already well ahead of the U.S. in commercial jet transports, are even farther ahead in turbo-prop planes (propellers driven by gas turbines). They have several test planes flying while the U.S. has none, although airmen expect the turboprops to be the short-range plane of the future as well as the intermediate aircraft between current reciprocating-engine planes and jet liners. Last week General Motors announced that it was finally putting the U.S. into the race to develop a turbo-prop transport.
From Consolidated Vultee Aircraft Corp., G.M. bought a 40-passenger two-engined...