This street is not passable by any normal car anymore. Coming from Via Cassone at Grotta del Coniglio there is a sign that the road is closed dating from at leat ten years ago. The full 1.9 km up to Belvedere di Calanna, where the road meets the parking lot is not paved most of the time and with really deep holes so you could only use it with a off-road vehicle, getting worse the further you drive up (walked it because we had to give up driving). The longer road coming from via cassone more to the east and ending in the parking lot at the belvedere is paved and perfectly passable.