Turbo Eco with Tailfin

Commercial FFs (and prototypes which could or might yet be)
Turbo Eco with Tailfin

The last of the Turbo Ecos, No. 89, in the pits at Brno in 2008. Note the rear tailfin which was fitted to several Ecomobiles. Less obvious are the hydraulically operated outriggers. Photo: Blez