parking on the stairs

It's not a usual place to find a parked car but that's what happened in Central London.  A male driver became confused and took a wrong turn landing his car on some steps.  It got stuck and was there for at least 12 hours before police were able to remove it.  You'd think that alcohol had been involved but the driver was given a breath test and it was negative.  Police issued a warning but didn't arrest him.  confused driver