Fair. It depends on the output of the turbine they might use. Various articles about Jay Leno's EcoJet car also says that they were looking into ways to add a

Fair. It depends on the output of the turbine they might use. Various articles about Jay Leno's EcoJet car also says that they were looking into ways to add an "intake" muffler, also citing that the Chrysler turbine car seemed to manage to quell the intake noise. Totally valid concern, but I'm sure they'd be able to manage to quiet it down enough. If it's quieter under braking than typical semis that use jakebraking, it could be a win.