trident
Yes indeed!
TVR's owner at the time, Arnold Burton, thought of the name for this car and then when it didn't get anywhere used it again for the Fioré-designed Tridents of 1965, of which 4 were built (my Avatar shows mine, the No. 3 car) before that too got nowhere after TVR's bankruptcy. Bill Last of course hi-jacked the design for his Trident series, of which about 85 were built.
The original TVR name for the aerodynamic Frank Costin-designed puzzle car was TVR P1 Project 5; I've given you that because I don't think it's possible to find it anywhere on the net or even in writing and I only know it because David Hives told me (he was of course TVR's general manager and chief engineer back in the 1960s). He actually drove this car around for a couple of months in 1962 and it gave him the original idea for the Hillman Imp-engined Tina, also designed by Fioré of course.
So it's one point for you!
Well done.