This soon turned into a nightmare, as the Lotus 91 was a beast to handle, Moreno had barely driven the car, as regular drivers, Mansell and Elio de Angelis did most of the testing, with Moreno being restricted to the older Lotus 87B and Lotus 88 models.
Isto pronto se converteu nun pesadelo, xa que o Lotus 91 era unha besta difícil de manexar, Moreno apenas pilotara o coche, os pilotos regulares, Mansell e Elio de Angelis fixeran a maior parte das probas, Moreno se limitara a probar aos máis vellos Modelos de Lotus 87B e Lotus 88.