Time for another one of these posts, because it is. Some are real, some never made it off the drawing-board.
air
BAC/Aerospatiale Concorde (sadly, I never got to fly in one of these)
Tupolev Tu-144
Boeing 2707 SST
Lockheed L-2000 SST
sea
SR.N3
SR.N4
SR.N6 (I nearly had the chance to ride in one of these when I was a kid)
I think I used to have a copy of this
land
Alvis Stalwart (I rode in one of these on a visit to SEME at Bordon when I was in the Upper VI)
Alvis Saladin (I went to uni in Coventry and lived for a year on Fletchamstead Highway, where Alvis would test-drive their tanks at night)
Scammell heavy haulage tractor and trailer (a relatively common sight on British roads in the 1970s)
Land Rover County 110 (back in the 1980s my boss had one of these, and I drove it quite often)
space
USAF’s Manned Orbiting Laboratory
Controlled touchdown, probably at Edwards, for Gemini spacecraft
Landing on the Moon using a Gemini spacecraft
“Big G” – a proposed 12-man Gemini spacecraft
It Doesn't Have To Be Right... 