Here, there is a gate to prevent cars from driving further onto Allée du Bois des Quewées. Only pedestrians and cyclists can access this part of the path. I've seen workers with cars from the forestry services there unlocking the gate, but they're the only ones to have access. 

See on Google Maps Street View here: https://maps.app.goo.gl/zFcG2ViRMfnpVom59