Mama mia, thatsa ugly.
One of the problems with turbine engines was the terrific amount of heat they generated. While stopped at a red light, the exhaust from your turbine car would be welding the front bumper of the car behind you. To address this, they routed the exhaust past a rotating drum. Half of the drum was in the exhaust and the other half was in the incoming air, preheating it. Lotsa problems.
The M-1 Abrams main battle tank, all 54 tons of it, is powered by a gas turbine engine which can be removed as a unit & test run just sitting on the ground.
As a tanker used to M-60’s with diesel engines, I was skeptical since I had also been a pilot flying choppers with gas turbine engines.
But the Abrams is awesome.