Some information regarding the economic benefit of trails:
Via the Adventure Cycling Association: The Economic Benefit Of Bike Travel
Via the Dayton Daily News: Bike trail users spend millions of dollars locally, says survey
The trails in these studies are long distance urban to urban trails. More like a Traverse City to Cadillac or Petoskey trail than the Leelanau trail.
But this is what I want to see. Long distance city-to-city trails originating from Traverse City. I'd like to see Traverse City as the hub of a regional trail system as the experiences of other communities demonstrates that these trails can be worth millions of dollars per year to the local economy.