Porsche overtakes Volkswagen as Europe's most valuable carmaker

The Feb. 15, 2018 file photo shows a Porsche logo on a 2018 718 Cayman automobile on display at the Pittsburgh Auto Show.  (AP Photo/Gene J. Puskar, file) The Feb. 15, 2018 file photo shows a Porsche logo on a 2018 718 Cayman automobile on display at the Pittsburgh Auto Show. (AP Photo/Gene J. Puskar, file)