The transition from the dual motor Impact prototype to the LPF Impact fleet was underway in 1992 and, of course, lead to the production re-branded EV1 c1995. These images are from the GM Tech Center and show the original foam & cardboard mock-ups for some of the system designs.

Note the 94 style LPF inverter pictured here vs. the early inverter pictured below.

(1) The following seven (7) pictures are very early development shots. In this first picture note the very early style mock-up inverter, likely patterned after the dual motor Impact prototype vehicle, although this mock-up chassis is focused on the overall post 1992 single motor design.

(2) Note the early development motor cooling lines.

(3) Early inverter.

(4)

(5) Note the A/C compressor situated inside the frame outrigger, later moved to the outside area in front of the left front wheel.

(6) Early development motor cooling lines. Also note the location of the right motor mount, later moved to the outside end of the motor in the production versions.

(7) Another early mock-up in the background.