EventsEvents by DealershipRusnak Westlake Porsche No Substitute Saturdays Porsche Westlake 9/16 SHARE ON: Rusnak Auto Group — September 29, 2017 Westlake, CA. September 16th. Porsche Westlake hosts another edition of No Substitute Saturday’s, a coffee and cars event for Porsche owners. Coffee and pastries were served to all who attended.