The story behind oil’s plunge American drivers could soon be partying like it’s 1999. Oil prices have already taken a dramatic fall that’s saved consumers big time at the pump . Last week, crude tumbled below $42 a barrel , down from $100 last year. One big-name investor is predicting an even sharper drop. “There is no evidence whatsoever to suggest we have bottomed. You could have $15 or $20 oil — easily,” influential money manager David Kotok told CNNMoney. A further decline to $15 a barrel would be huge. Oil hasn’t traded that low since early 1999, when gasoline at the pump was selling for under $1 a gallon. Kotok’s views on the economy and financial markets are closely watched. The 72-year-old co-founder of Cumberland Advisors manages more than $2 billion in assets and hosts an annual invite-only fishing trip that doubles as an economic summit. Known as […]