SSL Labs analysis: <a href="https://www.ssllabs.com/ssltest/analyze.html?d=members.zipcar.com" rel="nofollow">https://www.ssllabs.com/ssltest/analyze.html?d=members.zipca...</a><p>They might have revoked the certificate themselves via the GoDaddy webinterface by accident: <a href="https://support.godaddy.com/help/article/4747/revoking-an-ssl-certificate" rel="nofollow">https://support.godaddy.com/help/article/4747/revoking-an-ss...</a>