One of the rarest concept hypercars ever with a jet turbine engine belongs to Jay Leno.

Jay Leno JetCar, lead imageJay Leno Takes Neil DeGrasse To 165 MPH In His Jet Engine-Powered Car |  Carscoops

Jay Leno's Airplane Engine Collection | Air & Space Magazine| Smithsonian  Magazine

Jay Leno gets a Turbine Car