Chrysler's entry was the Lycoming AGT1500 gas turbine engine, while GM Defense proposed a 1,500-horsepower diesel engine.

The XP-21 Firebird 1 was designed by GM styling VP, Harley J. Earl. It was the first ever gas-turbine powered automoible to be built and tested in the US. The engine was called the 'Whirlfire ...

Built by Vince Granatelli, son of Indy 500 guru Andy Granatelli, this curious Corvette came into being by cramming a Pratt & Whitney ST6N-74 gas turbine engine into the donor car's lengthy front end.

The growth underscores GM's stubborn commitment to EVs, despite heavy losses and a trend among rivals including Ford and Toyota to prioritize gas-electric hybrids. Analysts credited GM's EV surge ...