have to do is go up to the charging station, tap and go with a mastercard paypass card. it is very safe and secure and makes the experience easy. today, we have over 83 million kurds in the market today. -- cards in the market today. we are making everything more quick and convenient for our consumers. mastercard is thrilled to be part of this " were groundbreaking technology. what better place to launch than here in san francisco, the greatest city in the state. with that, i will turn the podium back over to the mayor and we are going to take a mastercard paypass card and charge away. [applause] >> hold a card right here for a moment. now it is charging. now i get to go home. >> nothing else? >> tap and go. safe and secure. >> unbelievable. an extraordinary moment. >> give me a sense, how much will this cost? >> i do not know what the policies here will be, but typically, about $2 a day. >> no requirements on the card? are you going to turn it may for just $2? >> no, we do not. >> i have driven his car for over two years and i have yet to go to a gas station. >> i work