A $1200-$kgkg compact SUV is moving along a straight highway at $12\mathrm{.}0$ m$/$sm$/$s$.$ A large car, with mass M$==2000$kg$$kg and speed V$==18\mathrm{.}5$m$/$s$$m$/$s has its center of mass $40\mathrm{.}0$ mm ahead of the center of mass of the SUV. Suppose the car had been traveling to the left with speed $18\mathrm{.}5$m$/$s$$m$/$s $,$ instead of to the right $($with the SUV's motion unchanged$).$ In such a case, the car would of course be in the other lane of the highway so as to avoid a head$-$on collision. What would the speed of the center of mass of the system have been in such a case?