Kicking off the first day of summer, the City of St. Petersburg held a public meeting last night to show off plans and get input on how to grow the increasingly busy Sunrunner bus line. Planners say connecting the busy downtown urban center to the popular gulf coast beachfronts while providing housing and employment opportunities is essential to attracting new residents, but also preserving the character of existing neighborhoods. Sunrunner rides are free until October this year, and ridership has increased month after month since October last year.