Morgul, would you believe I actually have an original JETEX car that was powered by a solid fuel with a fuse ! It would do a Genuine 85 MPH on your lounge-room floor with a string attached to a central (weighted) point swivel. Can't buy the fuel anymore, but it was something amazing for me as a kid in the fifties, and it is pretty bloody incredible for it's time ! Do you have one Morgul ? I will attempt to insert a photo of mine. I still have the box and attachments !!!