That's a good joke. The regional express departing at -31 and -49 past every hour has four extra stops on its way (Deutz, Mülheim, Leverkusen Benrath) and that requires an extra 10 minutes. The fare is by far cheaper and these double decker trains give you good sights. There is a nice masterthread on Railways in Germany in the European Railway forum giving you all the information in detail (I know it because I wrote it) Depending on where "work" is it might be by far easier on jump on one of these on the intermediate stations