Virgin Galactic has been taking reservations for over 12 years for a trip to 'space' and has experienced multiple delays/new target dates/more delays (sound familiar?). Granted, folks are in to them for a $100,000 product, not a $10,000 (or less) product, but the article discusses the efforts Virgin has gone to to keep those early reservationists engaged through the years. I realize we're talking an order of magnitude difference between a flight to 'space' and a new Elio, but Elio could have, and still could, do SOMETHING (more than rehashing old blog posts once a week) to help maintain interest, build the community.
Cufflinks and the Caribbean: How Virgin Galactic kept space tourists' interest and money
Cufflinks and the Caribbean: How Virgin Galactic kept space tourists' interest and money