▁Camp ing ▁World ▁T ruck ▁Series ▁circ uits . ▁Current ▁permanent ▁se ating ▁capacity ▁is ▁approximately ▁ 5 0 , 0 0 0 . ▁Add itional ▁port able ▁seats ▁are ▁brought ▁in ▁for ▁some ▁events , ▁and ▁se ating ▁capacity ▁can ▁be ▁expanded ▁to ▁ 1 5 0 , 0 0 0 . ▁In frastr ucture ▁is ▁in ▁place ▁to ▁expand ▁the ▁facility ▁to ▁include ▁a ▁short ▁track , ▁drag ▁strip , ▁and ▁road ▁course . ▁ ▁History ▁At ▁its ▁peak , ▁the ▁facility ▁hosted ▁four ▁major ▁races ▁each ▁year : ▁two ▁NAS C AR ▁X fin ity ▁Series ▁races ▁and ▁two ▁NAS C AR ▁Camp ing ▁World ▁T ruck ▁Series ▁races ▁( one ▁per ▁year ▁prior ▁to ▁ 2 0 1 0 ). ▁The ▁Ind y Car ▁Series ▁Fir estone ▁Ind y ▁ 2 0 0 ▁was ▁run ▁at ▁the ▁track ▁from ▁its ▁opening ▁until ▁ 2 0 0 8 . ▁Each ▁feature ▁event ▁was ▁usually ▁accompanied ▁by ▁a ▁companion ▁event ▁from ▁lower - t ier ▁series ▁such ▁as ▁AR CA ▁and ▁Ind y ▁L ights . ▁NAS C AR ▁contin ually ▁showed ▁little ▁interest ▁in ▁st aging ▁a ▁S print ▁Cup ▁Series ▁race ▁at ▁the ▁track . ▁ ▁In ▁October ▁ 2 0 0 9 , ▁D over ▁Mot ors ports ▁decided ▁to ▁close ▁M emph is ▁Mot ors ports ▁Park , ▁and ▁the ▁M emph is ▁T ruck ▁race ▁originally ▁scheduled ▁for ▁late ▁June ▁ 2 0 1 0 ▁was ▁moved ▁to ▁Nash ville ▁Sup ers pe ed way ▁on