The 1956 Pontiac Firebird II

The Firebird II represented a progress report on the feasibility of gas turbine powered vehicles. Unlike the original, single-seat Firebird I that developed exhaust temperatures of more than 1250 degrees F, the four-passenger Firebird II featured a regenerative gas turbine engine that operated nearly 1000 degrees cooler. Other innovations included the first use of wheel disc brakes, fully independent four-wheel suspension and the sophisticated electronic guidance system for use on the "electronic highway of the future."