Liberal Democrat MSP Alison McInnes led a debate on the first ever 'liftshare' week on 26 January 2011.
Ms McInnes said membership of the UK-wide car-sharing network had now exceeded 400,000 and car sharing had both environmental benefits and could save people money through shared travelling costs.
She asked: "How can we keep the daily commute convenient and door-to-door yet also cut costs, congestion and carbon?"
The Lib Dem MSP added that encouraging car sharing and other more sustainable transport options could play a key part in helping the transport sector to meet its share of Scotland's climate change reduction targets.
SNP MSP and former Transport Minister Stewart Stevenson said a structured approach for individuals to join up with others who were making similar journeys was something that must be encouraged.
Transport Minister Keith Brown said Scottish ministers were supportive of car sharing.
Mr Brown also said the government's ambition was that workplaces with more than 30 employees should have an effective travel plan by 2022 in place to help achieve substantial reductions in commuter trips in single-occupant cars.