[Imp]

I tend to always try & preserve my crews, if have spare soft vehicles due to say defending delaying in a campaigh tend to do the following.
Set up near map edge & imediatly drive off any I dont think will be required.
For defend so they get an entrenchment may place to get an entrenchment in a fall back position so another unit can take it over if required.
Then drive them off or make sure they at least remain out of sight otherwise the fortification is detected.
Rational when defending artillery is normally fairly heavy so why give up the points for vulnerable soft vehicles that get caught when you can drive the taxis off to safety.