What about the public sector, usually in further education type family,taterly dressed,bloke with bushy beard,downtrodden wife/ partner in in old Laura Ashley type frock with worst of all their ' free range kids' often wearing NHS type ill fitting specs.They are very articulate,bloke speaks fluent 'top gear' language like 'no darling not that one,it's the entry model'.In the meantime Joshua and Tamara are in and out your stock,standing on seats,pulling off sales cards and leaving doors ajar...... !