Make use of P+Rail. You use your car to the nearest station and change to the train for the long travel sector.

At the train's destination, you change to:

• to a RailTaxi:
  http://mct.sbb.ch/mct/en/reisemarkt/services/mobilitaet/railtaxi.htm  
• a hired car:
  http://mct.sbb.ch/mct/en/reisemarkt/services/mobilitaet/clickdrive.htm
• a car from a CarSharing fleet: http://mct.sbb.ch/mct/en/reisemarkt/services/mobilitaet/carsharing.htm   

for the last stretch of your journey and you arrive at the final destination in a relaxed state, be it the venue of the meeting, the office, or the home of acquaintances or relatives.