The idea came from Lego set 8635. I never had this set.
That truck is way too big for normal roads.
I also wanted to make more stealth version.
I have got some agents minifigs when I have bought used legos.
"Oh,no! There is one of Dr. Infernos helpers. What is she up to?"
"She steps into that black car."
"Let's follow her."
With this telescopic sponge the agents can mark a car with special paint
that is visible only in UV-light. (The truck has UV-lights.)
What is that green dot?
When you lift this secret lever...
...the truck shoots green slime.