Can you believe it? Test-drive a new '87 Yugo and you'll get more than 1% of the purchase price in cash, even if you don't buy the car! That's because New England Yugo dealers know that one taste of that vaunted Yugoslavian build quality is enough to make you sign on the line that is dotted. Is it just us, or does Yugo's "Buy yourself a little freedom" theme song have ominous overtones of payoffs to the secret police?