Something about small Renaults and zoo people, perhaps. I once rode in Molly Badhams, and she joked that all the flower beds and trees at Twycross had to be at least far enough apart to allow her Renault 5 to pass through, everywhere - and, it had all its interior door and window handles (save the drivers) removed, so that the Chimps couldn't get out...
The obvious question, then, is whether you drive a Renault yourself.....