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Job Letter Description Normal Time (days) Immediate Predecessor(s) A Start 0.0 B Design 8.0 A C Order special accessories 0.1 D Build frame 1.0 E Build doors 1.0 F Attach axles, wheels, gas tank 1.0 G Build body shell 2.0 H Build transmission and drivetrain 3.0 BBB DBB | Fit doors to body shell 1.0 G, E Build engine 4.0 K Bench-test engine 2.0 B- J L Assemble chassis 1.0 F, H, K M Road-test chassis 0.5 L N Paint body 2.0 I Install wiring 1.0 N OPORSTU Install interior 1.5 N Accept delivery of special accessories 5.0 C Mount body and accessories on chassis 1.0 M, O, P, Q Road test car 0.5 R Attach exterior trim 1.0 S Finish 0.0 T