Is restricting gun access a part of the solution to mass shooting incidents in the U.S.?

Well, certainly those trucks can be obtained in the supermarket with a special discount if you're lucky. However, an attractive alternative could be the yearly truck show - where the seller boasts how quickly they go from 0 to 100 with an estimated bodycount only to be left to the buyers imagination. Anyone can obtain them, too. Can't be young enough to transport yourself with a good old truck.