California is once again nearly out of the green stickers that give plug-in hybrids easy access to the state's high-occupancy vehicle lanes. They might only last several more weeks at the current rate.
After sealing the championship in Bahrain this weekend, Porsche gave Juan Pablo Montoya the chance to test-drive its victorious 919 Hybrid. He set the fastest time of the day. If the test is any indication, he could yet win the elusive Triple Crown of Motorsports.
Chris Harris brings together the Porsche 918 Spyder, Ferrari LaFerrari, and McLaren P1 at the Portimao circuit to find out which one is the quickest. He also invites Tiff Needell and Marino Franchitti for a track battle.