Problem is a turbine does not handle variable power output well. It runs well at one speed and does not handle sudden demands for acceleration or unloading at all well. This is of concern with a turbine driven gearbox design. If a jet propulsion then you can't reverse and aside from afterburner you really can't accel as well as a turbocharged gas engine. Also Jet A is a hell of a lot more expensive than hi octane! (and a lot less publically available). One other issue, your over the front wheel fenders will seriously obstruct your vision. The front tires will also interfer with the fenders when turning. If a turbine you can ditch the tailpipes! Still, it DOES look cool!

Pass no temptation lightly by, for one never knows when it may pass again!