一直纳闷为什么我的车加满油刚开始下的很慢,后来下的快。以为油箱是的漏斗形。
Research shows drivers feel happier when a full tank stays on "Full" longer, and feel a helpful sense of urgency when the needle nears empty. A truly linear gauge often upsets people because the needle drops noticeably soon after leaving the gas station.

