Fun in the front lawn

This past weekend, AM (age 5) and I saw someone putting up games on their front lawn on the way to shul. I asked Alex what we should put on our front lawn.  He said, "a roller coaster.  And it shoulg go to Bubby's house.  There should be different sections for different age children.  A section with car seats for those under 4 year, a section with boosters for children 5, 6, 7, and 8 and a regular seat section for 9, 10 and up.  It goes ten hundred miles an hour." 

I can see the next public transportation project (after the purple line) already.