Six state parks in Missouri now offer the vehicles, which are like wheelchairs but with a bulldozer-like track instead of ...

Track chair allows people with disabilities to enjoy state parks in Michigan 02:45. NORTHVILLE, Mich. (CBS DETROIT) - Summer is the perfect time to get outside and enjoy nature.

Her wheelchair wouldn't have made it, but the track chair's robust frame and heavy-duty treads carried LeVasseur, 30, to the lake with ease.

Each track chair costs about $16,000, according to the DNR. There are 21 state parks that have track chairs available for free use, with six more coming soon, according to the DNR website.

This track chair program runs out of the Port Oneida Rural Historic District on Port Oneida Road just north of Glen Arbor. The trail overlooks historic barns, fields, forests, and Sleeping Bear Bay.