That parachute is smaller than that used for ONE person, not 7 people, 2 V8 engines, a fuselage and some fuel.
But if "investors" are stupid enough to put their money into a CGI exercise, then they deserve to lose it.
If a pegasus jet engine was barely able to support the Harrier, I somehow doubt that 2 car engines can support this figment of somebody's jerkoff project.