De or het radarauto?

The correct Dutch article is:

de radarauto

How to use radarauto

the radarautode radarauto
this radarautodeze radarauto
that radarautodie radarauto
our radarautoonze radarauto
your radarautojouw radarauto
every radarautoelke radarauto
which radarauto?welke radarauto?
a big radarauto / the big radarautoeen grote radarauto, de grote radarauto