This is a surprisingly deep rabbit hole:
Championed by one individual in Italy, Pierro Terufi, but it sprang up in Spain and California as well. Terufi started in the 1930s, and ended a company, OSI, in 1968.
- Girela Randine Streamliner ?t=182
- Cd 0.10 frontal area 7.5 sq ft ?t=359
- Tarfi 1 opened up ?t=491
- California belly tanker ?t=617
- Twin engined pod racer! ?t=737
- 1952-3 Pegaso three-views ?t=801
- ...and ?t=916
- Finally, the entire second half, from ?t=1176 is the story about Terufi creating the Silver Fox as OSI was circling the drain.
- Three view at ?t=1463 for your 3D modelling needs
I think the reason I like twin boom cars is having always liked belly tankers. But the open wheel design is suboptimal. But two belly tanks cover the wheels. QED