Terry Sprang says:

Solar cell jetpump ultralightweight nesting hydrofoil speedboats,
of course.

Pop bottles taped together, polyglass / used nylon stocking
(pantyhose), cardboard core reinforced plastic "boat" style kite
/ airplanes using hydrogen "cold steam" sculling oolau drive
engines, assisted by the aero-bouyant hydrogen gas bag /
fuselage, towing water ballasted keels.

Didn't you know?


Step away from the bong, Terry - NOW!!

;-)

Steve