I was on a recent Air Canada Signature Class flight back in November 2018, flying from Toronto to Haneda, Tokyo, Japan. After the passing through the security check point, I walked down to the tarmac and this black BMW 7-Series limo was waiting for me. The limo driver greeted me and put my carry-on at the back of the trunk and he drove me to the next building. Although it was only 7 minute drive, it was an interesting experience and the spot he dropped me off, I literally took the escalator and I could walk to the Signature Suite. I believe the limo fits 3 passengers.