At Geneva airport, you will find the train station right next to the airport.
There are many trains to Lausanne; the trip takes about 45 minutes.
Last train: just after midnight
More infos about Genèva airport: www.gva.ch
More information on the Swiss railway network: www.cff.ch
An annual fee is payable for the use of the Swiss motorways as well as semimotorways.
It is in the format of as a vignette whose selling price is CHF 40.-.
You can buy them at customs, post offices, petrol stations or garages.