No, it wasn't the worst Volvo ever built. The C70 convertible was a very expensive car with a lot of engineering design. But, the folding roof was extremely complex with many moving parts. You know what happens to complex machinery over time, especially if it has not been meticulously maintained. If you could find a garage queen, it might be a reasonable buy. But I suggest you avoid one if the roof is already non-functional. BMW had similar problems with their 3 series. The manual roofs were durable and easy to use. The electric ones were incredible expensive to repair, and they broke frequently.