RUNNINGS BY HARRY KIRSBAUM PHOTOGRAPHY BY ANGIE BAAN COLD DAY. TOP DOWN. II don't really care that it's a brisk 40-something degrees on a sunny October morning. I'm test-driving an $80,000 convertible. The key word is sunny and the top will be down all day long. This is not the boxy BMW you remember during the Reagan administration. This Beemer has it all: 4.4-liter 32-valve V8 engine with 325 hors- es, variable ratio rack and pinion power steering, aluminum double- pivot strut-type front suspension, 4-link integral rear suspension and a wicked-looking cup holder. It has all the power you need to get around the city, and it's a Continued on page 8 6 • DECEMBER 2004 • JNPLATINUM