In "Kramer versus Kramer," the ad guy played by Dustin Hoffman came up with a slogan for his big car account: "Boxy but good." That used to describe Volvos perfectly. No longer. Things are changing at Volvo, and they're changing for the better. Gone is the traditional square styling. And now that the Swedish manufacturer is owned and backed by Ford, Volvo has recently launched a host of new models. There's a new line of smaller cars (the S40 sedan and V40 wagon) and a svelte new S80 luxury sedan. And redesigned line-up of V70 wagons is on its way. The sleek C70 Coupe and C70 Convertible personify these exciting changes at Volvo. The C70 has surely caught your eye. It swings Volvo's image from stodgy Scandinavian to sexy Swede. And the joys of the C70 models go well beyond styling. Their smooth, powerful engines, taut suspensions and crisp steering deliver superb performance that should appeal to enthusiast drivers.