, ▁and ▁Por sche ▁history . ▁A ▁re vised ▁“ T re ffen ® ” ▁now ▁allows ▁P CA ▁members ▁to ▁visit ▁the ▁factory , ▁the ▁new ▁Por sche ▁Museum , ▁the ▁area ▁around ▁Stuttgart , ▁Germany , ▁and ▁the ▁research - and - development ▁unit ▁at ▁We iss ach . ▁A ▁professional ▁staff , ▁head ed ▁by ▁Executive ▁Director ▁V u ▁N gu yen , ▁oper ates ▁the ▁National ▁Office ▁in ▁Columbia , ▁Maryland , ▁where ▁a ▁growing ▁historical ▁section ▁is ▁also ▁hous ed . ▁One ▁of ▁the ▁object ives ▁stated ▁in ▁P CA ' s ▁By la ws ▁is ▁to ▁promote ▁the ▁enjoy ment ▁and ▁sharing ▁of ▁good will ▁and ▁fellow ship ▁eng ender ed ▁by ▁ow ning ▁a ▁Por sche . ▁ ▁Events ▁▁ ▁P CA ▁is ▁best ▁known ▁for ▁its ▁events . ▁With ▁over ▁ 3 , 5 0 0 ▁annual ▁events ▁and ▁activities , ▁the ▁club ▁has ▁something ▁for ▁every ▁Por sche ▁enthus iast . ▁The ▁club ' s ▁largest ▁event ▁is ▁the ▁annual ▁Por sche ▁Par ade , ▁which ▁is ▁a ▁week - long ▁event ▁where ▁members ▁from ▁around ▁the ▁country ▁gather ▁to ▁particip ate ▁in ▁various ▁events , ▁such ▁as ▁aut oc ross ▁and ▁Conc ours ▁d ' E leg ance . ▁Tre ffen ▁North ▁America ▁are ▁week end ▁events ▁held ▁twice ▁a ▁year ▁and ▁focus ▁on ▁driving ▁t ours , ▁great ▁locations ▁and ▁fine ▁d ining . ▁P CA ▁also ▁hosts ▁two ▁national ▁te ch ▁sessions ▁each ▁year ▁called ▁Te ch ▁T act ics ,