PNUM hard-coded and Vehicle table creation bug fix #932

Job	Run time
linux-64-py3.10	11m 43s
random_seed_generation_test	4m 54s
win-64	14m 1s
macOS	4m 57s
Standard 1-Zone Example (MTC)	46m 20s
Standard 2-Zone Example (SANDAG)	49m 6s
prototype_marin	3m 44s
prototype_mtc_extended	1h 13m 47s
placeholder_psrc	33m 13s
prototype_sandag_xborder	6m 18s
placeholder_sandag	1h 58m 40s
production_semcog	7m 39s
prototype_mtc	41m 38s
Estimation Mode Unit Tests	18m 48s
prototype_mwcog	40m 14s
placeholder_multiple_zone	10m 35s
develop-docbuild	0s
	8h 5m 37s

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