The day I meet Sonja Lyubomirsky, she keeps getting calls from her Toyota Prius dealer.When she finally picks up, she is excited by the news: she can buy the car she wants in two days.

• 我和柳波莫斯基（SonjaLyubomirsky）会面的那一天，丰田汽车经销商不停打电话来找她，当她终于接起电话时，听到一个令她开心的好消息：两天内她就可以拿到她想要买的Prius了。