Self-Driver Launchpoints often appear on Zeruertzan roadsides. I haven't tried one yet, but apparently, you can use it to launch a Self-Driving Cart.
animStyle="Click", focusStyle="HighlightCircle", black=0.5, \
protectTime=0.5, dialogHead="$avatar_stward", dialogX="$f_lower_dialog_pos_x", dialogY="$f_lower_dialog_pos_y")] \
There's a Self-Driver Launchpoint right here.
animStyle="Click", focusStyle="HighlightCircle", black="$f_tut_black", \
protectTime=0.5, dialogHead="$avatar_stward")] \
Once Self-Driver Launchpoints are all ready, you can spend a certain amount of DP to launch a Self-Driving Cart in a fixed-direction. I'll give it a shot...
animStyle="Highlight", focusStyle="HighlightCircle", black="$f_tut_black", \
protectTime=0.5, dialogHead="$avatar_stward")] \
Once a Self-Driving Cart is launched, it'll follow a predetermined course in a straight line, and deal Physical Damage that ignores Dodge along with a brief stun to any enemies it collides with.
animStyle="Highlight", focusStyle="HighlightCircle", black="$f_tut_black", \
protectTime=0.5, dialogHead="$avatar_stward")] \
Once it hits impassable terrain, the Self-Driving Cart is basically out. It looks like you have to be sure about it before you launch.