We have a 1989 W124 Mercedes 300 TE 24.We are looking to downsize to a FIAT Panda for local use as we also run a 2004 Mercedes S500, which we intend to hold on to. However, the general consensus is that we continue to run the W124 until it can run no longer, based on the assumption that it has no monetary value now and that the only cost involved is fuel. There is nothing mechanically suspect at the moment. Given that there must be a large number of your readers considering a similar move in the current economic climate, would your advice be to continue driving it until it fails, or downsize now for financial and environmental reasons? I currently drive it for around 30 miles per day.