Car satnavs are set to get a major update in the coming months that could help massively reduce journey times. Tomorrow, Roads Minister Guy Opperman is expected to announce new changes that will not only help current drivers but also help pave the way for a future driverless car revolution. Satnavs and Google Maps will soon include live data on road closures, parking restrictions and temporary speed limits in England. Currently, not all local councils store the information digitally, meaning that they are missed on satnav systems. It has led to drivers being stuck unnecessarily in traffic when…