/* Set Cars */
.car1 {
  position: absolute;
   width: 75px; 
   left: -200px;
}
.car2 {
   position: absolute;
   width: 75px; 
   right: -200px;
}
.car3 {
   position: absolute;
   height: 60px; 
   bottom: -200px;
}
.car4 {
   position: absolute;
   height: 60px; 
   top: -200px;
}

/* Set Animations */
@keyframes drive1 {
   from { transform: translateX(0); }
   to { transform: translateX(calc(100vw + 250px)); }
}
@keyframes drive2 {
   from { transform: translateX(0); }
   to { transform: translateX(calc(-100vw - 250px)); }
}
@keyframes drive3 {
   from { transform: translateY(0); }
   to { transform: translateY(calc(-100vh - 250px)); }
}
@keyframes drive4 {
   from { transform: translateY(0); }
   to { transform: translateY(calc(100vh + 250px)); }
}