I've been there, but in August... it was nice then, at any rate. Gothenburg is like a small Copenhagen -- full of cafes and good small restaurants. We didn't really do much beyond wander the boulevards, explore the all-evening fun fair in the big park at the city center, etc. That doesn't sound too feasible for February though. But there's usually some activity laid on for customers at the Factory Delivery Center: an assembly-line tour, a look at the Volvo Museum, etc., depending on what's available. The Volvo staff take good care of their TDS customers.