time to review speed limits?

As the government is about to review speed limits, wouldn't this be a good time to press them for a review on the archaic 50mph & 60 mph which we are restricted to, and allow us to legally keep up with the traffic flow? Tow cars & caravans have become so more advanced now than when when this limit was imposed on us. Of course the maximum speed limit would not be compulsory and drivers who are not happy with the increase would still be free to travel at their prefered speed.