Methods and devices for producing hydrogen from heavy hydrocarbons by catalytic partial dehydrogenation by means of a catalyst that contains at least one noble metal are described. A tank cover covers the fuel tank, and a gearshift lever for an automatic transmission is located on a side of the fuel tank. The callee ID information may be transmitted using conventional FSK techniques, e. Routing pathways include wireless spanning tree networks, wide area networks, telephone switching networks, internet, etc. In addition, the invention relates to the use of a mixture comprising at least two active compounds selected from mepiquat chloride, chlormequat chloride, N,N-dimethylmorpholinium chloride, metconazole, tebuconazole, paclobutrazol, trinexapac and prohexadion or an agriculturally useful salt thereof for enhancing harvest security of crops needing vernalization.